Specularity,brightness, achromatic color—and orthogonality

For objects under the same illumination, the more specular object appeared brighter. This occurred irrespective of an object’s apparent achromatic color, the distance at which it was viewed, the level of illumination, the method used for collecting observations, and other conditions. Also, when identical specular objects were differently illuminated, the one under the higher illumination, with the higher maximal luminances, appeared brighter. In the five experiments, which involved 340 subjects subdivided into 17 groups, large fields of view and real spaces were used. The results supported the conclusion that apparent brightness and achromatic color are orthogonal phenomena, and that in four of these experiments increased apparent brightness was correlated to, if not determined by, maximal specular luminances without regard to achromatic colors and diffuse luminances. This conclusion was necessarily modified by a fifth experiment, which showed that if placed under sufficiently high levels of illumination, less specular surfaces appeared brighter than more specular surfaces. This was taken to mean that a total account of the apparent brightness of surfaces would depend on an undiscovered algorithm involving maximal specular and diffuseluminances and their areal extents. With regard to the validity of the studies, the subjects were shown to have phenomenally discriminated brightness from glossiness and glare. Finally, phenomenal gloss and glare were found to be correlated to a surface’s level of specularity.     

Individuality,supervenience and Bell's theorem

Some recent work in the philosophy of quantum mechanics has suggested that quantum systems can be thought of as non-separable and therefore non-individual, in some sense, in Bell and E.P.R. type situations. This suggestion is set in the context of previous work regarding the individuality of quantal particles and it is argued that such entities can be considered as individuals if their non-classical statistical correlations are understood in terms of non-supervenient relations holding between them. We conclude that such relations are strongly non-supervenient in Cleland's sense and note a possible connection between this idea and the realist quantum logic programme.     

Word attributes and lateralization revisited: Implications for dual coding and discrete versus continuous processing

Three attributes of words are their imageability, concreteness, and familiarity. From a literature review and several experiments, I previously concluded (Boles, 1983a) that only familiarity affects the overall near-threshold recognition of words, and that none of the attributes affects right-visual-field superiority for word recognition. Here these conclusions are modified by two experiments demonstrating a critical mediating influence of intentional versus incidental memory instructions. In Experiment 1, subjects were instructed to remember the words they were shown, for subsequent recall. The results showed effects of both imageability and familiarity on overall recognition, as well as an effect of imageability on lateralization. In Experiment 2, word-memory instructions were deleted and the results essentially reinstated the findings of Boles (1983a). It is concluded that right-hemisphere imagery processes can participate in word recognition under intentional memory instructions. Within the dual coding theory (Paivio, 1971), the results argue that both discrete and continuous processing modes are available, that the modes can be used strategically, and that continuous processing can occur prior to response stages.     

DADTA VI: A minicomputer-based video control system for the analysis of behavioral and electrophysiological data

A computer-automated testing apparatus for monkey and human subjects is described. This dual-computer system generates programmable color video displays and permits on-line collection of behavioral and electrophysiological data. Video displays are generated by an Apple II minicomputer linked via a serial transmission port to a general-purpose laboratory computer (DEC PDP-11/34). Control of event sequences is determined by serial interaction between the two computers. Software (programs) for the collection and analysis of event-related brain potentials data is described, and the experimental and clinical applications of this DADTA VI (Discrimination apparatus for discrete-trial analysis, Version 6) for neuropsychology are discussed.     

Verbal ability and mental processing speed

The notion that verbal ability is related to mental processing speed was examined using tasks that systematically varied in semantic content. Subjects’ reaction times were measured in five tasks involving arrow matching, physical identity word matching, or taxonomic identity word matching. The findings indicated that matching tasks using different decision rules and different stimuli were all related to verbal ability. In fact, reaction time for subjects required to judge whether two arrows pointed in the same direction was the best predictor of verbal ability. One explanation of the results is that speed of information processing (a general factor) may be the important component of verbal ability which is measured by seemingly different matching tasks.     

A computerized system for recording and analysis of self-observations of couples’ interaction

This paper describes a method for recording couples’ observations of their communications during an ongoing interaction sequence. The procedure allows the recording and decoding of immediate reactions, while maintaining an ecologically valid observation environment. Responses are encoded on a stereo cassette tape player and are decoded by a PDP-11/10 computer with two Schmitt triggers that count the peaks in the tones. The computer provides analysis of the response value and time. Applications for other research problems in the areas of social and applied clinical psychology are discussed.     

Attitude bolstering when behavior is inconsistent with central attitudes

An experiment was conducted to study the effects of behaving inconsistently with a central attitude. In a theoretical account, it is suggested that subjects who score high on a feminism scale and who fail to solve a sex-role problem and thus demonstrate sexist thinking will be motivated to adopt feminist (nonsexist) behavior more than subjects who are either lower in feminism or who don't fail such a problem. Since the attitude is central, attitude bolstering rather than change in the direction of the behavior should be the preferred mode of inconsistency reduction for such subjects. Bolstering, in the form of positive affirmative action decisions, was generally demonstrated by subjects who failed the sex-role problem. This effect was more pronounced for those highest in feminism. No such effects on affirmative action decisions were observed for subjects who didn't fail the sex-role problem. Results support the view that threats to one's self-image caused by one's own counter-attitudinal actions lead to attempts to reestablish those threatened values. A conceptual analysis of the conditions under which bolstering rather than attitude change in the direction of the behavior should be expected is presented.     

Short-term visual storage

The delay between the offset of a briefly exposed array of letters and digits and the onset of an arrow pointing at one of the array positions was varied from 0 to 5000 msec. In addition, the luminance of the stimulus array was varied over three levels. The Ss reported the item in the position indicated by the arrow. Luminance, delay, and the luminance by delay interaction were all significant I Performance monotonically decreased from a delay of 0 msec to a delay of 250 msec, but the percent correct remained fairly constant from 250 msec to 5000 msec. With delays shorter than 250 msec, high luminance arrays showed better performance.