The quality of potential symmetries of the similarity structure of the Basic Colour Terms has been assessed. The assessment was made on the basis of a database of similarity judgements, made by subjects in response to linguistically expressed questions. All potential symmetries can be statistically rejected, although the well-known and some novel interpretable symmetries are shown to be approximately correct.

Dienes' & Perner's proposals are discussed in relation to the distinction between explicit and implicit systems of thinking. Evans and Over (1996) propose that explicit processing resources are required for hypothetical thinking, in which mental models of possible world states are constructed. Such thinking requires representations in which the individuals' propositional attitudes including relevant beliefs and goals are made fully explicit.

Levelt et al. attempt to “model their theory” with weaver++. Modeling theories requires a model theory. The time is ripe for a methodology for building, testing, and evaluating computational models. We propose a tentative, five-step framework for tackling this problem, within which we discuss the potential strengths and weaknesses of Levelt et al.'s modeling approach.

Barsalou proposes (sect. 4.1.6) that perceptual symbols play a role in language processing. Data from our laboratory document this role and suggest the sorts of constraints used by simulators during language comprehension.

The same aggressive act will – all else being equal – have a different behavioral significance according to whether it is performed by a man or a woman. Such a perspective should have profound implications for legal and psychiatric practice, and for social policy in general.

Pylyshyn argues that many of the methods used to study perception are too coarse to detect the distinction between perceptual and cognitive processing. We suggest that the reason for this is that the theories used to guide research in perception are at fault. More powerful theories – for instance, computer simulations – will be required to identify where perception ends and where cognition begins.

According to the theory of lexical access presented by Levelt, Roelofs & Meyer, processing of semantic–syntactic information (i.e., lemma information) and phonological information (i.e., lexeme information) proceeds in a strictly discrete, serial manner. We will evaluate this claim in light of recent evidence from the literature and unpublished findings from our laboratory.

This commentary focuses on the role played by constructions of women's violence in the maintenance of male control over women. While actual women's violence tends to be denied, pathologized or minimized, cultural constructions (particularly in the media) of women's violence tend to demonize it. Both of these androcentric cultural processes fail to illuminate the actual sources of the gender gap in violent behavior and instead tend to normalize male aggression and to cultivate female passivity.

In agreement with Barsalou's point that perceptions are not the records or the products of a recording system, and with a nod to an older system in which perception is an activity of testing what future glances bring, I argue that the behavior of perceptual inquiry necessarily makes choices in what is sampled; in what and how the sample is encoded, and what structure across samples is pursued and tested; and when to conclude the inquiry. Much of this is now being hectically rediscovered, but a comprehensive approach like the one Barsalou proposes should help preserve what progress is made.

Color-order systems highlight certain features of color phenomenology while neglecting others. It is misleading to speak as if there were a single “psychological color space” that might be described by a rather simple formal structure. Criticisms of functionalism based on multiple realizations of a too-simple formal description of chromatic pheno-menal relations thus miss the mark. It is quite implausible that a functional system representing the full complexity of human color phenomenology should be realizable by radically different qualitative states.

Dienes & Perner make three mistakes in their account of the “natural language meaning” of implicit-explicit knowledge: They fail to take the multiplicity of use of a concept seriously enough, they arbitrarily separate use of a concept and its conceptual structure, and they tend to tailor their analysis for use by the Representational Theory of Knowledge.

Two of the premises of Pylyshyn's target article – surface reconstruction as the goal of early vision and inaccessibility of intermediate stages in the process presumably leading to such reconstruction – are questioned and found wanting.

Barsalou's move to a perceptual basis for cognition is welcome. His scheme contrasts with classical logical schemes in many ways, including its implications for the status of individuals. Barsalou deals mainly with perceived individuals, omitting discussion of cognized individuals. It is argued that the individuality of cognized individuals is an abstraction, which conforms in its manner of formation to other cognitive abstractions which Barsalou discusses, such as truth and disjunction.

The ultimate causes of sex differences in human aggressive behavior can lie mainly in evolved, inherited mechanisms that differ by sex or mainly in the differing placement of women and men in the social structure. The present commentary contrasts Campbell's evolutionary interpretation of aggression sex differences with a social structural interpretation that encompasses a wider range of phenomena.

Palmer's “isomorphism constraint” presupposes the logical possibility of two qualitatively disparate sets of sensory experiences exhibiting the same relationships. Two arguments are presented to demonstrate that, because such a state of affairs cannot be coherently specified, its occurrence is not logically possible. The prospects for behavioral and biological science are better than Palmer suggests; those for functionalism are worse.

The weaver++ model discussed by Levelt et al. assumes incremental encoding and articulation following complete encoding. However, many of the response latency results can also be accounted for by assuming incremental articulation. Another temporal variable, initial segment duration, can distinguish weaver++'s incremental encoding account from the incremental articulation account.

Dienes & Perner's (D&P's) target articles proposes an analysis of explicit knowledge based on a progressive transformation of implicit into explicit products, applying this gradient to different aspects of knowledge that can be represented. The goal is to integrate a philosophical concept of knowledge with relevant psychophysical and neuropsychological data. D&P seem to fill an impressive portion of the gap between these two areas. We focus on two examples where a full synthesis of theoretical and empirical data seems difficult to establish and would require further refinement of the model: action representation and the closely related consciousness of action, which is in turn related to self-consciousness.

The heuristic value of Pylyshyn's cognitive impenetrability theory is questioned in this commentary, mainly because, as it stands, the key argument cannot be challenged empirically. Pylyshyn requires unambiguous evidence for an effect of cognitive states on early perceptual mechanisms, which is impossible to provide because we can only infer what might happen at these earlier levels of processing on the basis of evidence collected at the post-perceptual stage. Furthermore, the theory that early visual processes cannot be modified by cognitive states implies that it is totally pointless to try to investigate interactions between consciousness and neurosensory processes.

Points of criticism of the target include: the extreme violence of females in defence of young despite high potential cost, the reality of female dominance striving, differences in male and female ritualization of aggression, the real existence of institutionalized female instrumental aggression, and the uselessness of “patriarchy” as defined as a category for differential analysis. It is concluded that it may in fact be the decline of patriarchy in the strict sense that leads to the female use of exculpatory explanations for aggression, thus reversing Campbell's proposed causal sequence.

The isomorphism between relational structures advocated by Palmer corresponds quite closely to Paul Churchland's theory of “state-space semantics,” so much so that one can be used to elucidate problematic areas in the other. The resulting hybrid shows eliminative materialism to be superior to functionalism as a theory of mental phenomena and seems to provide the best ontology for cognitive science.