Acquiring a cognitive skill with a new repeating version of the Tower of London task.

A computerized version of the Tower of London task was used to investigate cognitive skill learning. Thirty-six healthy volunteers were assigned to either a random condition (nonrecurring problems), or to a sequence condition in which, unbeknownst to the subjects, a repeating sequence of three problems was presented. Indices of execution, planning, and total time, as well as number of moves performed, were used to measure behavioural change. Subjects' performance improved in both conditions across blocks of practice. A distinct learning effect related to the repeating sequence was also observed. This suggests that a specific skill that reflects procedural learning of the strategies, rules, and procedures pertaining to repeating problems can develop over and above a more general skill at solving cognitive planning problems with practice.     

New Books on Darwinism Look at the Religious and Rhetorical Aspects of Evolutionary Theory

Darwin's Proof: The Triumph of Religion Over Science , Cornelius Hunter, Brazos Press 2003 (1-58743-056-8), pp. 168, Hb $17.99
Doubts About Darwin: A History of Intelligent Design , Thomas Woodward, Baker Books 2003 (0-8010-6443-0), pp. 303, Hb $19.99     

Factor analytic structure of the Scale to Asses World View

This article reports on the factor structure of theScale to Assess World View ^(c) (SAWV). Alpha reliabilities for the factors are presented. Gender differences in world views are also explored to understand how men and women in this sample viewed the world. Recommendations for client assessment, therapy, education and training, and scale revision are discussed. The research reported here is based on a paper presented at the annual meeting of the American Psychological Association, Washington, DC, August 17, 1992.     

Introducing an existential-phenomenological approach Part 2—theory for practice

Part one of this paper concentrated on phenomenological theory and research. This second section seeks to describe how existential-phenomenological therapy developed, and how the concepts apply in sessions. This direction for therapy could be called making conscious the preconscious, in the production of new information by reinterpreting the same scenes and experiences. This approach is compared to the psychoanalytic style of working. The existential-phenomenological approaches of Binswanger, Boss and Sartre, three key existential writers, are briefly mentioned, each of which evolved from the work of Husserl, Heidegger and Freud. But much detail is omitted in the aim of providng a succinct overview. This paper shows part of the sources of counselling and humanistic psychotherapy in the existential critique of psychoanalysis.     

Imagery and olfactory stimulation

The purpose of the present study was to investigate a possible odor-emotion interaction by determining whether humans could differentially detect other humans' odor collected under varying emotional conditions. Odorants were collected from the axillary apocrine glands of four female donors, each of whom underwent different imagery induction procedures of anxiety, relaxation, and sexual arousal. The odorants were chemically preserved and later evaluated by 16 naive white male judges as to the presence of discriminatory odor cues. Judges' imagery was differentially related to the anxiety imagery-produced odorants but only for those produced by the most imaginative donors. The relaxation odorants of all donors were correlated. The judges were unable to detect the sexual imagery arousal odorants.     

The influence of gender and temperament on children's interaction with a baby

This study examined gender differences in children's interaction with a baby who visited their day-care center over several weeks. Twenty-two children ranging in age from 47 to 64 months of age participated. The children's teacher filled out a questionnaire assessing each child's extraversion, activity level, and loudness. A female baby visited the day care center from one to three times a week over a two-month period. Each child's interactions with the baby were observed twice. Active, outgoing, loud girls were much more likely to interact with the baby than either quiet girls or any boys. Several of these highly interactive girls had no younger siblings. Children were found to interact with the baby more on their second observation.The research reported here was supported by a grant from the Purdue Research Foundation. I would like to thank Connie Clauss for her help with data collection.     

The efficacy of stimulus fading and contingency management in the treatment of elective mutism: a case study

Stimulus fading techniques were compared to those of contingency management in the treatment of a 6-yr-old, electively mute girl. Experimental periods consisted of the mother rewarding the child for verbal and motor responses to scheduled tasks, while a stranger slowly entered the room and then gradually administered the task items as mother left the room. A timeout contingency for non-response to task items was also employed. Control periods consisted of a stranger administering the same tasks to the child under the same contingencies but without the presence of the mother or the use of stimulus fading. Experimental and control periods were alternated during each treatment hour. The stimulus fading procedure was found to be a necessary component of the treatment process. While the timeout contingency for non-response was found to facilitate treatment if combined with stimulus fading, it was completely ineffective without the stimulus fading.