Visual-memory search: An integrative perspective

A large, single-frame, visual-memory search experiment is reported in which memory and display loads of 1, 2, and 4 alphanumeric characters were factorially combined. In addition to the usual Consistent Mapping and Varied Mapping conditions, the experiment also involved a Categorical Varied Mapping condition in which different sets of stimuli switched roles as targets and distractors over trials. The stimuli used in these various mapping conditions were either digits, letters, or digits and letters. Analyses of the response time means obtained early and late in training suggest that the presence of categorical distinctions among the stimuli is the most important determinant of search efficiency. Comparison of the load effects on the response time means and on their standard deviations revealed a fairly constant ratio throughout the experimental conditions, which suggests that similar search processes may have been involved. A feature-based comparison model is indeed shown to account for the response time means obtained after extensive training under just about all training conditions, as well as for the ratios of load effects on means and standard deviations. According to the model, improvement in search efficiency results from a reduction in the number of features considered. The model's performance questions the necessity to postulate qualitative differences between controlled and automatic processing, while the experiment forces a reassessment of the importance of the consistent mapping that underlies dual-process theories.     

Symbols presentation modality as a determinant of gambling behavior

In this study, the authors investigated the effects that modality of symbol presentation on video lottery terminals (sequential vs. simultaneous) has on gambling behavior. They predicted that sequential presentation would incite players to prolong their gambling session. Results confirmed this prediction and showed that modality of presentation is a determinant of gambling persistency. The authors discuss the relationship between modality of presentation, hopes of an imminent win, losses, and practical and theoretical issues about other cognitive and emotional elements that may influence gamblers' behaviors.     

French descriptions of Wundt's laboratory in Leipzig in 1886

Translations are provided of extracts from reports by the French-speaking scholars Alfred Grafé and Emile Durkheim concerning the instructional procedures in place at Wundt's Institute for Experimental Psychology in Leipzig in the summer of 1886. It is stressed that reports such as theirs were of importance, not only to researchers, but also to teachers and administrators concerned with how the new experimental psychology should be taught, especially with respect to practical classes.     

The Impact of Parenting Experience on Gender Stereotyped Toy Play of Children

The purpose of this study was to examine gender role socialization as a function of parenting experience in an actual toy play situation and as a function of adults' perceptions of typically gender-stereotyped children's toys. Each of 48 children (24 boys and 24 girls) played with 3 adults: either his or her own mother or father, a matched mother or father of another child, and a matched man or woman who was not a parent. The amount of time children and adults played with gender-specific toys, adults' categorization of toys into gender categories, and adults' desirability ratings of gender-specific toys were examined. The gender-sorting task revealed that adults did not agree with traditional expert categorizations of some of the toys, which suggests a shift in the perceived function of some traditionally stereotyped toys. Regardless of how parents sorted toys into categories, when playing with boys, most time was spent with masculine toys. With girls, however, there was greater flexibility in the categories of toys with which they played. Parenting experience influenced the perceived desirability of toys; parents found toys more desirable than nonparents but these differences did not affect the actual play session with children. These results suggest a change in perceptions of traditionally stereotyped toys and differences as a function of gender in what is appropriate gender-typing behavior.     

Does social dominance generate prejudice? Integrating individual and contextual determinants of intergroup cognitions

Social dominance orientation (SDO) has been proposed as an important variable in the explanation of prejudice. We distinguish between three conceptualizations of SDO: SDO as a personality trait (personality model), SDO as a moderator of the effects of situational variables (Person x Situation model), and SDO as a mediator of the effect of social position on prejudice (group socialization model [GSM]). Four studies (N = 1.657) looking at the relations between social positions, SDO, and prejudice in a natural setting and in a laboratory setting provide strong support for the GSM. In contrast to previous correlational findings, there is evidence of a cause (dominant social position), an effect (prejudice increases), and a mediator (SDO). These results suggest new perspectives on the integration of individual and contextual determinants of prejudice.     

Further exploration memory bias in compulsive washers

The aim of the present study was to replicate Radomsky and Rachman's findings on memory bias in obsessive-compulsive disorder (OCD), using the same procedure but an increased sample size, more specific control groups, and a full analysis of contamination attribution data. Sixteen OCD-washers, 16 OCD-checkers, 16 social phobic patients and 16 non-anxious controls were presented with 50 'clean' or 'dirty' objects. After this incidental encoding phase, participants were asked to freely recall the objects, to rate their anxiety when almost touching each object, and, finally, to attribute each object to one of the two contamination conditions ('clean' or 'dirty'). Verbal episodic memory was also assessed with the California Verbal Learning Test. The results indicate that, contrary to Radomsky and Rachman's findings, OCD-washers did not differ from the other participants in their memory for 'clean' and 'dirty' objects. However, the OCD-washers recalled more accurately the 'dirty' source of contamination than the 'clean' source. This result was specific to the OCD-washers, and suggests a memory bias for contextually threatening information. The differences between our findings and those published by Radomsky and Rachman's are discussed.     

Neural substrates of impaired categorical perception of phonemes in adult dyslexics: an fMRI study

Phonological developmental dyslexics remain impaired in phonetic categorical perception (CP) even in adulthood. We studied the brain correlates of CP in dyslexics and controls using a block design fMRI protocol and stimuli from an phonetic continuum between natural /Pa/ and /Ta/ syllables. Subjects performed a pseudo-passive listening task which does not imply voluntary categorical judgment. In the control group, categorical deviant stimuli elicited specific activations in the left angular gyrus, the right inferior frontal gyrus and the right superior cingulate cortex. These regions were not activated in the dyslexic group in which activation was observed for acoustic but not phonetic changes in stimuli. Failures to activate key regions for language perception and auditory attention in dyslexic might account for persistent deficits in phonological awareness and reading tasks.     

Short versus long term gains of a cognitive-behavioral social skills program targeting the giving and receiving of criticism

Seventy-four university undergraduates (40.2% male and 59.8% female) reporting difficulty in giving and receiving criticism were randomly assigned to either a training group consisting of cognitive behavioral criticism skills including behavior rehearsal, modeling, coaching, cognitive restructuring, or to a control group. Dependent measures were given at pre-test, post-test, and one year follow-up. Included were self-report measures consisting of Fear of Negative Evaluation (FNE), Criticism Concerns Scale (CCS), Criticism Self-Esteem Giving and Receiving Scales, and behavioral role-play measures consisting of judges’ global ratings of subject’s verbal and nonverbal criticism behaviors in role-play scenarios with a live actor. Results for the self-report measures, FNE, and Criticism Self-Esteem Receiving showed both training program and control groups improved at post-test, but only the training program group maintained gains at one year follow-up. For the CCS and Criticism Self-Esteem Giving, the training program group improved over time, yet was only significantly different from control group at post-test. Results were discussed in terms of the pro-active nature of giving criticism versus the more reactive nature of receiving criticism.