ISSN 1393-614X Minerva - An Internet Journal of
Philosophy Vol. 8 2004.
____________________________________________________
BEHAVIOURISM IS BACK! Majid Amini |
Abstract
It was not long ago that behaviourism
was almost a contemptuous epithet, if not a contretemps career epitaph, and few
theorists wished to be mistaken for behaviourists. However, there has been a
recent shift of alliances with the emergence of a new breed of researchers that
openly advocate the incorporation of behaviourism into the study of
consciousness. This critical essay is therefore devoted to the examination of
Rodney Cotterill’s work whose theoretical orientation in the field of
consciousness positions him among the eminent members of this growing group of
theorists.
Behaviourism
was once a dominant movement in psychology, and, even as late as 1976, it was
not uncommon to come across claims that ‘since the days of Chicago
functionalism and Columbian Thorndikianism, no one has seriously doubted the
hegemony of behaviourism’ and that any other theoretical predilection in
psychology ‘existed more by contrast with behaviourism than as a school of
thought in its own right.’ (Wispé & Thompson, 1976, 346) Yet shortly thereafter,
the “cognitive revolution” displaced behaviourism from psychology’s front page
and, increasingly, from departments of psychology. But, what did happen?
In his
historical re-evaluation of behaviourism with an unreserved recommendation for
its reintroduction into the mainstream psychology, John Staddon traces the
eclipse of behaviourism by cognitive revolution back to two principal factors:
the digital computer and the theoretical paucity of Skinnerian behaviourism.
(Staddon, 1993) The appearance of digital computers provided a feasible
framework for mentalistic ideas to be simulated for the first time, and thereby
cognitive psychology was enabled to parry behaviouristic criticisms that
cognitive theories were inexact and anecdotal. Secondly, the appropriation of
behaviourism by the Skinnerian radical rendition of it — with its strong bias
against formal theory and its belief that psychology is nothing but the
collection of orderly behavioural experimental data — deprived behaviourism of
the necessary means to understand the multifarious manifestations of the mind
and its inner workings. Staddon laments that the atheoretical excesses of
radical behaviourism went to the extent that they ‘blocked advances within
behaviourism so that connectionism, the next evolutionary step in the
associationistic tradition of the early behaviourists, was forced to find home
in cognitive, rather than behaviouristic, psychology.’ (Staddon, 1993, 108)
With
appropriate theoretical chastisement, however, we are given to understand that
the reformed behaviourist can offer a framework for scientific psychology that
far surpasses conventional cognitive psychology in its explanation and
prediction of mental phenomena. The new theoretical behaviourism, Staddon
suggests, can deal with mentalistic problems like consciousness without
ignoring them, obscuring the distinction between what is inside as opposed to
what is outside the organism, or confusing what is felt with what can be
measured, while remaining faithful to its fundamental insight about the mind, viz.,
behaviour. That is, “renaissance” behaviourism is promised to provide
theoretical links between behaviour and the brain that have
allegedly eluded cognitive psychologists thus far. It is, therefore, against
this backdrop that the aims and achievements of researchers like Rodney
Cotterill could be better appreciated. 1
In the Enchanted
Looms, Cotterill is primarily concerned with the contentious core of the
mind/body problem, namely, consciousness, within the broad framework of a
computational approach, as suggested by the subtitle, Conscious Networks in
Brains and Computers. Among the most profound puzzles like the origin of
the Universe, the nature of time, and the relationship between the four
fundamental forces of nature, Cotterill believes that ‘consciousness is fast
becoming one of the last major bastions of mystery.’ (Cotterill, 2000, xi) Yet,
Cotterill’s contention is nothing other than to demystify consciousness. The
tome is, thus, intended to answer questions such as how it is possible for
conscious states to depend upon brain states, how technicolour phenomenology
can arise from soggy gray matter, what makes the bodily organ called brain so
radically different from other bodily organs like lungs, and how the
combination of millions of individually insentient neurones can culminate in
sentience and consciousness. In short, ‘how consciousness arises from the
brain’s anatomy and physiology.’ (Cotterill, 2000, 10) For Cotterill, however, the
justification for delving into such matters substantially stems from the
‘ultimate need to judge whether conscious computers are likely to emerge in the
foreseeable future.’ (Cotterill, 2000, 172)
To set the scene for discussion, it would help to give an
outline of Cotterill’s eleven-chapter odyssey in the Enchanted
Looms. The book could be
effectively divided into three parts. Part one, consisting of the first two
chapters, offers an overall view of the project, its problems and the history
of mind in terms of its physics. The second part, covering the next six
chapters, describes the cortical anatomy and neurophysiology of brain in great
details with an emphasis on how a computational theory could be used to explain
cerebral activities. Concerning the latter, however, Cotterill is very
insistent on distinguishing between computational constructions inspired by the
brain and the actual neuronal networks present in the brain, where it is the
latter that one should aim for in the quest for understanding consciousness. In
the final part, forming the last three chapters, Cotterill attempts to explain
the emergence and functioning of a range of mental phenomena such as sensation,
thought, emotion, intelligence, introspection, and language from a
neurological-cum-philosophical
perspective.
It should be noted that Cotterill himself is one of the
leading researchers in the field with an expertise in biophysics, and naturally
his approach to the question of consciousness is heavily informed by his
empirical background. His account could, therefore, be embedded within the
greater camp of constructive naturalism, according to which consciousness is a purely natural
phenomenon and its explanation must be solely constructed in terms of physical
notions and concepts. In this spirit, Cotterill develops a scientific approach
to consciousness by linking conscious experience to observations from
neuroscience and cortical anatomy about correlated brain activity and function,
and to the descriptions of mental processing that come from psychology and
cognitive science. A characteristic feature of Cotterill’s naturalistic
approach is its bottom-up strategy, whereby the aim is to synthesise a multi-cellular
picture from the available knowledge of how individual nerve cells behave.
(Cotterill, 2000, 29)
That is, to present an explanation of conscious phenomena in terms of the
underlying processes at the neuronal level. Whereas a top-down route takes its starting point observations on the
behaviour of the complete person and uses these to draw conclusions about the
nature of the underlying mechanisms. Although Cotterill agrees that a full and
complete explanation should include both strategies (Cotterill, 2000, 321), he
insists that a proper appreciation of the top-down route could be obtained only
through prior consideration of what the bottom-up strategy is able to
offer. From a philosophical perspective, however, the merit of
Cotterill’s work lies in its sensitivity to and concern for issues surrounding
consciousness in philosophy.
Obviously, the first port of call in the quest for a
constructive account of consciousness is to give a delineation of what one is
looking for, viz.,
‘what consciousness actually is.’ (Cotterill, 2000, 9) However, as Cotterill
concedes and most other researchers in the field readily attest, the concept
has turned out to be very elusive and hard to elucidate. Nonetheless, Cotterill
offers an interesting diagnosis for the difficulty to pin down the ‘bare
essentials’ of consciousness: it is the failure to separate consciousness from
its products. Cotterill contends that the elusiveness emerges from the sheer
abundance of mental and experiential phenomena mediated by consciousness which
has eclipsed the nature of this fundamental attribute. On his reading, one must
differentiate between the underlying mechanism of consciousness and its mere
consequences, i.e., ‘the
tall and richly varied oaks of our conscious experiences and the little acorn
of the underlying mechanism.’ (Cotterill, 2000, 332) Cotterill thus proposes
that ‘it is the mind that is the product of
consciousness.’ (Cotterill, 2000, 10;
original emphasis)
With this ontological reversal and in pursuit of exposing
the bare essentials of consciousness, Cotterill adopts a paradoxically
“refreshing” approach by appealing to behaviourism and motor theory of mind.
Within the constructive naturalist camp, Cotterill is espousing a type of
neo-behaviourism — he in
fact calls it quasi-behaviourism. (Cotterill, 2000, 344) According to classical
behaviourism, there was nothing over and above behaviour or disposition to
behaviour to the mind. However, behaviourism came under heavy attack especially
for its neglect of internal states, and through the sustained criticism of people like Noam
Chomsky the appellation became almost a term of abuse! Yet, interested parties
like Cotterill, while avoiding the excesses of behaviourism such as the
rejection of internal states and indeed deeming them as necessary constituents,
have availed themselves of its idea of constructing mental activities in terms
of bodily behaviour and motor movement.
It is in this vein that Cotterill describes the brain as ‘a
stimulus-response device’ and states that what constitutes the unifying
characteristic of all animal responses including humans’ — with their varying degrees of sophistication, of course — is that ‘our goals are all accomplished by muscles.’
(Cotterill, 2000, 21) He claims that, except in those cases where the movement
is part of a reflex, the muscular output is determined by processes taking
place in the brain: mechanisms that produce an appropriate response for a given
sensory input. He thus views the challenge of accounting for the mind, unlike
the classical behaviourists, in terms of obtaining a clear picture of those
intervening events. This naturally leads Cotterill to an extended treatment of
brain functioning, but he argues that there is a certain continuity as things
progress from the obviously simple devices to the manifestly more complex ones
like human brain. Steadily increasing demands on the performance of our brain
does not require any radical change in what could be called the physics of its
behaviour, nor should it suggest that the processes underlying brain function
involve principles not previously encountered in the scientific enterprise.
Against the backdrop of an evolutionary outlook on the
brain’s function in terms of its unique contribution to the body’s survival and
reproduction, Cotterill suggests that the evolution of the brain from its
simplest configuration to the apex of its complexity in human beings has been
only for the furthering of those goals. The cerebral cortex, as much as the
limbic system, is nothing other than an embellishment that simply serves the
same general cause, and the acquisition of a widened inventory of operational
choices is only a means to enhance the organism’s chance of survival. In this
light, it should not come as a surprise when thinking — the “pinnacle” of mental manifestation — is characterised by Cotterill as ‘a
bodily function.’ (Cotterill, 2000, 59;
original emphasis) More specifically, ‘thought proceeds through the simulation
of muscular movements.’ (Cotterill, 2000,
338; original emphasis)
Cotterill uses the same strategy to extend his
neo-behaviouristic explanatory paradigm to other cerebral phenomena. He argues
that the role of memory, for example, in the functioning of the real brain is
to render it robust against externally imposed variations in its operating
conditions, which, he claims, is achieved through muscular movements. He then
goes on to marshal certain empirical evidence to show that memory is
conditional on muscular activity. Similarly, “the oaks” of consciousness is
subjected to the mechanistic modelling. However, before presenting Cotterill’s
account, two preparatory points are in order.
First, although Cotterill admits that there is no unanimous
and uncontentious definition of consciousness, he proposes, à
la John Searle, a consciousness agenda that
homes in on six structural characteristics of consciousness. These are the features
that a successful theory of consciousness must meet: namely, subjectivity and qualia, unity and continuity of consciousness, intentionality, central and peripheral consciousness, familiarity, and boundary conditions or situatedness of consciousness. 2 Second, one should recognise that an essential
evolutionary element in the emergence of consciousness is time. That is: ‘If the organism is to have the ability of
responding to the temporal texture of its environment, on the time scale
inherent in that texture, it will have to be able to retain a temporary record
that spans a sufficient amount of that texture. And it will need cognitive
mechanisms which extract relevant information from the texture, in the time
available. Only then will a response be possible which exploits the choice
implicit in the existence of that texture. Failing this, the information in
that texture will be lost, and the resulting synaptic changes (if any) will
merely reflect the statistics of the texture.’ (Cotterill, 2000, 333)
Now, subjectivity and qualia refer to how we as subjects of
experience undergo experiential episodes with their qualitative/phenomenal
features. Whereas the unity of and the continuity of the stream of
consciousness refer ‘to the fact that our experiences occupy a single conscious
field, irrespective of whether we are sensing external events or are occupied
by our thoughts’, and our ‘experiences and thoughts are retained for a few
seconds’ thus enabling ‘us to build upon them.’ (Cotterill, 2000, 320)
With the ‘time’ factor in mind and ensuring that
environmental changes are not wasted on us, Cotterill claims that qualia arose
‘naturally from the need to monitor the significance for the body of the
environment’s response to a volition-provoked stimulus.’ (Cotterill, 2000, 357)
Subjectivity and its related qualia are thus seen in terms of the interplay
between internal and external reafference of nerve signals. Cotterill also
cites clinical cases such as ‘the observations on victims of multiple
personality disorder’ as further justification for the idea that qualia are
inextricably related to the body’s musculature. (Cotterill, 2000, 370) In the
same spirit, he explains the unity and continuity of consciousness thus: ‘The
unity of conscious experience stems from the fact that the premotor area acts
as a bottleneck, policing planned movements so as to prevent them from bringing
the body’s muscles into mutual conflict; the unity therefore stems from the
fact that a muscle can adopt only one state at any given time, and this forces
the system to follow only a single muscular path, which essentially determines
the direction taken by the stream of consciousness.’ (Cotterill, 2000, 374)
There are, however, several ways of engaging critically with
Cotterill’s conception of consciousness. At one level, one may attempt to
assess his extensive empirical descriptions and interpretations of the workings
of brain’s neuronal machinery. But, the difficulty with this type of critical
engagement is that even if one unhesitatingly accepts the accuracy of all the
empirical observations at the micro-level, one is still in the dark about the macro-level: that is, how certain neuronal activities in the
brain culminate into a conscious experience. Why, for example, certain neuronal
firings feel like the taste of avocados or a deliberate decision to go to an
opera, whereas other neuronal firings feel like nothing at all? It is this
reductive gap that is still yawning! This is not an attempt to set up an
anti-reductionist roadblock but a plea for an explanatory causeway. Cotterill
maps out a series of stepping stones in the trail of consciousness, but at a
few challenging places along the track we are encouraged to make a fairly
acrobatic leap from one stone to the next and ultimately to the mosaic of the
mind.
At another level of critical assessment, one may take issue
with Cotterill over some specific topics such as his account of concept formation, his predilection for a connectionist model of brain, his intimation of modularity of brain, or his evolutionary assumptions about cognition.
For one thing, there are theoretical tensions between modularity and connectionism
concerning, for example, the issue of innateness; yet Cotterill does not seem to be concerned about the
urgency of addressing these doctrinal conflicts. For another thing, Cotterill
himself concedes the limitations of the principle of association underlying neural networks and recognises the inadequacy of
connectionism in tackling the somewhat classical “Fodor-Pylyshyn-esque”
criticism of connectionism that it fails to account for the productivity and systematicity of cognition. (Fodor & Pylyshyn, 1988) But, in a bit
more detail, I am going to look at Cotterill’s account of concept formation and
his evolutionary assumptions about cognition.
Concepts are considered to be the most fundamental
constructs in theories of mind, and naturally Cotterill attempts to shed some
light on this all-important mental machinery. Given their importance to all
aspects of cognition, it is also no surprise that concepts raise so many
controversies and questions in philosophy and cognitive science. These range
from the relatively local one like “Should concepts be thought of as bundles of
features, or do they embody mental theories?” to the most global one like “Are
concepts mental representations, or might they be abstract entities?” Indeed,
it is even controversial whether concepts are objects, as opposed to cognitive
or behavioural abilities of some sort.
Uncharacteristically, however, Cotterill’s treatment of
concept formation is insufficiently detailed and is limited to such general
statements as: ‘Our sensory systems generalize without us being aware of the
fact. They effortlessly interpret the particular in terms of the general,
thereby converting a percept to a concept.’ (Cotterill, 2000, 162-3) Concept formation, Cotterill
hints, is a matter of detecting ‘the underlying logic in’ input patterns and
‘making abstractions.’ (Cotterill, 2000, 174) But, this is very much
reminiscent of the classical abstractionist theory of John Locke which has been
found highly problematic and guilty of, inter
alia, what Jerry Fodor has termed
the inductivist fallacy. (Fodor, 1980a) That is, theories purporting to
explain new cognitive acquisitions like concepts can offer explanation on pain
of presupposing the availability of the very concepts involved in the new
acquisitions. The underlying thought here is that a stronger representational
system cannot arise from a weaker one by means of general learning. (Fodor,
1980b) Overall, Cotterill’s account of concept formation fails to grapple with
any of the important issues surrounding the nature, structure and acquisition
of concepts.
The other contentious aspect of Cotterill’s work is his
evolutionary assumptions about cognition. His theory is built on the
applicability of evolutionary criteria to cognition where it is assumed that natural
selection is a sufficiently fine-grained process to be able to have an impact on cognitive
capacities. Despite the appeal of explaining cognition as the result of
evolution through natural selection, there are serious qualms about administering
evolutionary explanations to cognitive capabilities. Natural selection is
often deemed to be too coarse-grained to be sensitive to such traits, and evolutionary
explanations of cognition seem to be founded at best on an analogy with
biological evolution. Notwithstanding the consideration that analogies
are often poor means of persuasion, as genetics/evolution experts like Richard
Lewontin, amongst others, have been persistently arguing, even if it were true
that selection operated directly on cognition, we have no way of measuring the
actual reproductive advantages. (Lewontin, 1998) It is very important to
recognise that the nature of any advantage accrued has to be couched in reproductive terms.
Also, any evolutionary reconstruction of that advantage must
show that individuals or family groups, rather than the species as a whole, had
such an advantage, since natural selection operates within populations to
increase the frequency of some types and decrease others through differences in
reproductive rates of individuals. Unless a more cognitively competent
individual or its immediate family leaves more offspring than other families,
selection will not increase the frequency of the selected character. Moreover,
there is no necessary relation between the selective increase of a character in
a species and any benefit to the species as a whole. There is no general
principle of natural selection that operates to benefit a species as a whole.
Generally, the problem is that there may have been no direct natural selection
for cognitive ability at all. Cognition may have developed as the purely
epiphenomenal consequence of the major increase in brain size, which, in turn,
may have been selected for quite other reasons.
Yet, at another level of critical evaluation, Cotterill is
also facing challenges, of principle and not of detail, from his fellow
naturalists, in particular, eliminative and anti-constructive naturalists. Like Cotterill, eliminativists maintain that
the story of “the brain’s anatomy and physiology” will tell the tale of mental
life, but unlike Cotterill they claim that consciousness is not going to be a
character in that narrative. It is simultaneously too simplistic, too vague,
and too historically embedded in false and confused theory to designate a
genuine phenomenon or set of phenomena in need of explanation. Consciousness is
a relic of a dark ignorant past! However, Cotterill’s silence on the
eliminativits’ animadversions on folk psychology is rather conspicuous.
The other rival naturalist camp that Cotterill ignores is
anti-constructivism. Basically, the position holds that although the mind is a
natural phenomenon, it is, in Colin McGinn’s terms, cognitively
closed to us. (McGinn, 1989) There
cannot be a naturalistic construction of consciousness because of our very
cognitive constitution. Interestingly, Cotterill himself mentions the issue of
cognitive closure and readily agrees with McGinn that ‘certain
things are beyond us’ but somehow fails to
see that the case of consciousness itself could indeed be one of those very ‘holes
in the mind.’ (Cotterill, 2000, 402;
original emphasis)
Nonetheless, structurally speaking, the fate of Cotterill’s
behaviouristic brand of constructive naturalisation of consciousness is very
much dependent on the fortunes of the motor theory of mind. But, the theory, despite its legendary lineage, has had a
chequered history. Charles Sherrington, as one of its early prominent
proponents, was renowned for statements such as: ‘To move things is all mankind
can do, and for such the sole executant is muscle, whether in whispering a
syllable or in felling a forest.’ (Eccles & Gibson, 1979) 3 He was convinced that despite the richness of human
cognitive capabilities, our species has at its disposal only one type of
external response: activation of appropriate muscles. Similarly, Edgar Adrian,
another kindred spirit of the same era, states in his influential work, The
Mechanism of Nervous Action, that: ‘The
chief function of the central nervous system is to send messages to the muscles
which will make the body move effectively as a whole.’ (Adrian, 1932)
Yet, the idea could not manage to secure a strong foothold
for itself in the debates concerning consciousness. At the time, in a very provocative
passage in his celebrated The Natural History of Mind, Arthur Ritchie vehemently protested that,
At the
suggestion that muscular movement may be intellectual I feel that there will be
a stirring of indignation among the highbrows. They will say, “Why all these
talk about acrobats and muscular activity? Granted that what the acrobat does
is perfect of its kind it is not properly an intellectual activity, like the
mathematician’s for instance”. In reply to this I should admit at once that
what the mathematician does is much more useful than what the acrobat does; but
is there any reason apart from snobbery for saying it is more intellectual? In
effect the acrobat thinks with the muscles of his whole body while the
mathematician thinks with — well,
whatever it is he thinks with. Of course it may be that the mathematician does
not think with anything but just thinks. Even if this were true, which is
doubtful, I find it hard to see why thinking with nothing should be more truly
thinking than thinking with your muscles. Because thinking is mental it does
not follow that it is not bodily too. (Ritchie, 1936, 127)
Still two decades later in 1952, with the exception of
William Ashby’s foundational proposal of mind as
motion (Ashby, 1952), Roger Sperry,
another mentor of the motor theory of mind, was complaining that,
An analysis
of our current thinking will show that it tends to suffer generally from a
failure to view mental activities in their proper relation, or even in any
relation, to motor behaviour. The remedy lies in further insight into the
relationship between the sensori-associative functions of the brain on the one
hand and its motor activity on the other. In order to achieve this insight, our
present one-sided preoccupation with the sensory avenues to the study of mental
processes will need to be supplemented by increased attention to the motor
patterns, and especially to what can be inferred from these regarding the
nature of the associative and sensory functions. In a machine, the output is usually
more revealing of the internal organisation than is the input. (Sperry, 1952,
296)
It is against this historical background that Cotterill
recommends that it ‘is high time we resuscitated the old motor theory’, whereby
he attempts to marshal evidence for the tenability of the theory. (Cotterill,
2000, 338) Cotterill contends that an explanation of the functioning of the
underlying neuronal circuitry of our brains provides a particularly compelling
evidence for the hypothesis. Indeed, in this quest, Cotterill is joined by a
coterie of researchers, notably Rodolfo Llinás, 4 to reinstate the motor theory of mind.
Llinás’ gloss on the motor theory of mind is that
“automatic” motor acts provide an exceptional window into the nature of
consciousness. He calls such movements “fixed action patterns” and argues that
they are where thinking and consciousness begin. Active movement is the very
source and main stem of mental life: ‘that which we call
thinking is the evolutionary internalisation of movement’. (Llinás, 2001, 35; original emphasis) Llinás points out
that only moving organisms have brains: in contrast to animals on the prowl
that rely on environmental monitoring and manipulation for their survival, a
tree, for example, has no need of a central nervous system because it is not
going anywhere. According to Llinás, the mind is just the nervous system and
the nervous system evolved to control active movement. In Llinás’ view, the
tunicate (a “sea squirt”) best exemplifies this close connection between
movement and mentality. This marine creature starts life as a motile larva,
equipped with a rudimentary brain-like ganglion of about 300 neurons that
receive sensory information about its surrounding habitat. 5 But after a day or two of cavorting in the shallows,
the larva finds a hospitable stationary substrate and proceeds to implant its
head end into the selected location, thus becoming sessile. As a sessile
organism, the sea squirt then ‘absorbs much of its brain and returns to the
rather primitive condition of the adult form of the species’. (Llinás, 1987,
341) 6
Now,
whether or not the empirical evidence amassed in favour of a motor theory of
mind withstands criticism has almost become a peripheral issue for the
behaviourism enthusiasts. From their perspective, what is significant is that a
new lifeline has been thrown to behaviourism. The doctrine of behaviourism has
been frequently declared dead. Obituaries and services for behaviourism abound,
and yet the corpse keeps creeping out of the coffin. ‘The disinterested
observer’, surmises Staddon, ‘might well conclude that vigorous attacks on an
allegedly moribund movement are a signal that behaviourism threatens to resurrect.’
(Staddon, 1993, 10) To the delight of its disciples, Cotterill’s
“consciousness” certainly corroborates the reports of resurrection:
behaviourism is back! 7
REFERENCES
Adrian, E.D. (1932) The
Mechanism of Nervous Action – Electrical Studies of the Neurons, London: Humphrey
Milford.
Ashby, W.R. (1952) Design for a Brain, London: Chapman & Hall.
Cotterill, R. (2000) Enchanted
Looms: Conscious Networks in Brains and Computers, Cambridge: Cambridge University Press.
Eccles, J.C. & Gibson, W.C. (1979) Sherrington
– His Life and Thought, Berlin:
Springer International.
Fodor, J.A. (1980a) ‘Statement of the Paradox’, in M.
Piattelli-Palmarini (Ed.), Language and Learning, London: Routledge & Kegan Paul.
Fodor, J.A. (1980b) ‘On the Impossibility of Acquiring “More
Powerful” Structures’, in M. Piattelli-Palmarini (Ed.), Language
and Learning, London: Routledge &
Kegan Paul.
Fodor, J.A. & Pylyshyn, Z.W. (1988) ‘Connectionism and
Cognitive Architecture: A Critical Analysis’, Cognition, 28: 3-72.
Lewontin, R.C. (1988) ‘The Evolution of Cognition: Questions
We Will Never Answer’, in D. Scarborough & S. Sternberg (Eds.), Methods,
Models, and Conceptual Issues: An Invitation to Cognitive Science, Volume 4, 2nd Edition, Cambridge (Massachusetts): MIT
Press.
Llinás, R. (1987) ‘“Mindness” as a Functional State of the
Brain’, in C. Blakemore & S. Greenfield (Eds.), Mindwaves:
Thoughts on Intelligence, Identity and Consciousness, Oxford: Basil Blackwell.
Llinás, R. (2001) I of the Vortex: From
Neurons to Self, Cambridge
(Massachusetts): MIT Press.
McGinn, C. (1989) ‘Can We Solve the Mind-Body Problem?’, Mind, 98: 349-366.
Ritchie, A.D. (1936) The Natural
History of Mind, London: Longman, Green
& Co.
Sherrington, C.S. (1906) The
Integrative Action of the Nervous System, New Haven: Yale University Press.
Sherrington, C.S. (1940) Man on
His Nature, Cambridge: Cambridge
University Press.
Sperry, R.W. (1952) ‘Neurology and the Mind-Body Problem’, American
Scientist, 40: 291-312.
Staddon, J. (1993) Behaviourism: Mind,
Mechanism and Society, London:
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Wispé, L.G. & Thompson, J.N. (1976) ‘The War Between the
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Psychologist, 31: 341-7.
NOTES
1. For the sake of accessibility, the
following discussion is largely focused on Cotterill’s Enchanted Looms,
which not only conveniently collects the findings of years of investigation
into a single volume but also provides a comprehensive account of Cotterill’s
approach.
2. However, in the subsequent discussion,
only the first two characteristics are going to be considered.
3. Sherrington was an influential English
physiologist whose book, The Integrative Action of the Nervous System,
summarised most of what was known at the turn of the twentieth century about
the reflex and exerted a strong influence on the evolution of psychology,
especially behaviourism. Among his pioneering efforts, Sherrington is credited
for coining the term synapse. Unsurprisingly, Cotterill has adopted the
title of his book, Enchanted Looms, from a passage in Sherrington’s Man
on His Nature.
4. Llinás is a leading neuroscientist who has
made major contributions to the understanding of the properties of nerve cells
and how they communicate within the brain. Much of his work has been in the
biophysics of mammalian central neurons, where he has been able to make
important advances in the ontogeny and phylogeny of brain development.
5. The rudimentary central nervous structure
of sea squirts consists of a statocyst (organ for balance), a primitive eye,
and a notocord (primitive spinal cord).
6. Llinás then goes on to compare the
adulthood of sea squirts to ‘a process paralleled by some human academics upon
obtaining university tenure’!
7. I would like to thank Anthony Freeman for
his helpful comments and suggestions.
Copyright © 2004
Minerva
All rights are reserved, but fair and good faith use with full attribution may
be made of this work for educational or scholarly purposes.
Dr. Majid Amini is
an Associate Professor of Philosophy at the Virginia State University, USA, and
has previously taught at the Universities of London and Manchester in Britain
and the University of the West Indies in Barbados.
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