Levels of aggregation: Relative time allocation in concurrent-schedule performance

The proportion of time allocated to one component of a concurrent variable-interval variable-interval schedule was computed for groups of interchangeover times (aggregates) within several intact time series. Variability in obtained proportions decreased as the number of interchangeover times within each aggregate increased; however, modal proportions failed to correspond to overall relative time allocation computed over the course of an entire experimental session, even at the largest aggregate size. The aggregated time series showed periodicities at small aggregate sizes and general trends in local preference at larger aggregate sizes. It is suggested that overall relative time allocation represents a molar extreme in the aggregation of behavior that may not accurately reflect central tendency in the allocation of time to available alternatives within the context of ongoing behavior.     

Economics, ecologics, and mechanics: The dynamics of responding under conditions of varying motivation

The mechanics of behavior developed by Killeen (1994) is extended to deal with deprivation and satiation and with recovery of arousal at the beginning of sessions. The extended theory is validated against satiation curves and within-session changes in response rates. Anomalies, such as (a) the positive correlation between magnitude of an incentive and response rates in some contexts and a negative correlation in other contexts and (b) the greater prominence of incentive effects when magnitude is varied within the session rather than between sessions, are explained in terms of the basic interplay of drive and incentive motivation. The models are applied to data from closed economies in which changes of satiation levels play a key role in determining the changes in behavior. Relaxation of various assumptions leads to closed-form models for response rates and demand functions in these contexts, ones that show reasonable accord with the data and reinforce arguments for unit price as a controlling variable. The central role of deprivation level in this treatment distinguishes it from economic models. It is argued that traditional experiments should be redesigned to reveal basic principles, that ecologic experiments should be redesigned to test the applicability of those principles in more natural contexts, and that behavioral economics should consist of the applications of these principles to economic contexts, not the adoption of economic models as alternatives to behavioral analysis.     

Assessment of sexual preference using a choice reaction time task

The purpose of this study was to investigate the use of a choice reaction time task, during which slides of sexually explicit and neutral stimuli were used as an interference task, to differentiate between groups of individuals on the basis of their sexual preference. Twenty subjects, in each of the four groups (heterosexual males, heterosexual females, homosexual males, and homosexual females), participated in this study. Sexual orientation was determined by self-report. Subjects were given a choice reaction time with interference task, followed by a recall incidental learning task. A significant higher-order interaction was found among gender, orientation, and stimulus type for all four groups. This interaction indicated a longer reaction time to slides depicting preferred sexual partners than to nonpreferred sexual partners or neutral scenes. These results indicate that sexual arousal does interfere with cognitive processing. A main effect for gender was found for the incidental learning task, with males having the fewest errors.     

Editor's note: The parameters of adult development

Based on a recent extension of Heinz Werner's (1957) organismic-developmental theory (e.g., Wapner, 1987; Wapner & Demick, 1990, 1991), suggestions for the parameters of theJournal of Adult Development have been generated. These include the need for: (1) a focus on adult development at all levels of integration (biological, psychological, sociocultural); (2) increased examination of the interrelations among these levels as well as between the psychological part-processes ofexperience (cognition, affect, valuation) andaction over the course of adult development; (3) the complementarity of theory and empiricism, of basic and applied research, and of quantitative and qualitative approaches to methodology; and (4) transdisciplinary collaboration. Preliminary editorial policies are sketched; recommendations for any aspect of policy and procedure are strongly encouraged.     

Music and driving game performance

This study investigated the effects of the nature of music and a concurrent task on measures of task performance and musical preference. Subjects completed 5 laps of a computer motor racing game whilst listening to either arousing or relatively unarousing music in either the presence or absence of a backward-counting task. Both these manipulations affected performance on the game with arousing music and backward-counting leading to slower lap times than relatively unarousing music and the absence of the backward-counting task. Backward-counting led to lower liking for the music than did the absence of this task. These results support the idea that music and the concurrent task competed for a limited processing resource. The results also indicated that liking for the music was positively related to task performance, and in conjunction these findings seem to suggest a direct link between music and the listening context.     

Contextual Factors Affecting the Organizational Commitment of Diverse Police Officers: A Levels of Analysis Perspective

This study examined the relationship of contextual factors to organizational commitment among 372 police officers in 13 police commands in New York City's public housing projects. Setting-level variables were formed by aggregating officers' perceptions of management support and fairness and management sensitivity to diversity within commands and within three subgroups formed by gender and ethnicity. Individual-level measures were deviations from these subgroup means within commands as well as perceptions of support from family and social support and negative interactions within commands. Overall, path analyses, confirmed by hierarchical linear modeling, showed direct setting-level effects for management support and fairness, but not for sensitivity to diversity, on organizational commitment. Both women and minority men experienced more negative social interactions than white men; support from management, co-workers, and family were important predictors of commitment. Family support was particularly important for women.     

Liking, Arousal Potential, and the Emotions Expressed by Music

Previous research indicates that the specific emotions expressed by stimuli may be closely associated with their pleasing and arousing qualities, and this parallels psychomusicological research on the relationship between these two stimulus qualities. In light of this, the present research contends that the emotions expressed by musical stimuli are associated with their pleasing and arousing qualities. Sixty subjects rated 32 musical excerpts on 11-point scales representing the expression of eight specific emotions. Statistical analyses showed that these emotion ratings were predictable on the basis of 60 additional subjects' ratings of each excerpt in terms of 'liking' and 'arousal potential'. This indicates that ratings of liking and arousal potential are essentially similar to ratings of the specific emotions expressed by musical stimuli. These results are discussed in terms of the relationship between liking and arousal potential, and the implications that this may have for research on affective processes.     

Sustained attentional and disattentional abilities and arousability: Factor analysis and relationships to hypnotic susceptibility

The neurophysiologically separate dimensions of deeply focused, sustained attention and arousability are shown to be differentially related to hypnotic susceptibility. University undergraduates, 98 men and 112 women, were administered the Harvard Group Scale of Hypnotic Susceptibility; the Group Stanford Hypnotic Susceptibility Scale, Form C (SHSS:C); and questionnaires that assessed attentional abilities (Differential Attentional Processes Inventory (DAPI), Tellegen Absorption Scale (TAS)), Extraversion (Eysenck Personality Questionnaire), strength of the nervous system (Strelau Temperament Scale (STS)), augmenting-reducing (Vando Reducer-Augmenter Scale (RAS)), and emotionality (Affect Intensity Measure (AIM)). Women were significantly higher on TAS, DAPI dual attention physical-cognitive scale, and AIM; men were significantly higher on TAS and STI Strength of Excitation Scale. Separate factor analyses for men and women separately yielded fairly similar four-factor solutions. The first major factor, defined by DAPI Moderately Focused Attention and Dual Attention scales, represented moderately sustained attention in a complex environment with limited interference from competing stimuli. The extremely involved and focused attention factor, defined by the TAS and DAPI Extremely Focused Attention Scale, had hypnotic susceptibility loaded more strongly for men than women. The arousability factor was defined by EPQ Extraversion, STI Mobility of Nervous System (MNS) scale, and RAS. The neo-Pavlovian nervous system processes factor was defined by the STI Strength of Excitation and Strength of Inhibition scales; the STI MNS scale also loaded on this factor for men. Only for women were introverts more hypnotizable than extraverts. Results support H. J. Crawford and J. H. Gruzelier's (1992) in E. Fromm and M. Nash (Eds.) Contemporary Perspectives in Hypnosis Research (pp. 227–266) New York: Guildford Press) neurophysiological model of hypnosis that proposes that highly hypnotizable persons have a more efficient fronto-limbic sustained attentional and disattentional system.     

Effects of stroking horses on both humans' and horses' heart rate responses1

Abstract: The present study examined both human and horse heart rates (HRs) when humans stroked horses for 90 seconds; the subjective arousal levels of the humans were measured by the Tohoku Activation Deactivation Adjective Check List before and after stroking horses. Six male subjects with a positive attitude toward companion animals and 6 male subjects with a negative attitude were selected by their scores on the Pet Attitude Scale, and these two groups, together with a third group, of 6 subjects who were male members of the Doshisha University horse-riding club, participated in this experiment. The HRs of the human subjects during the first 10 seconds immediately after the stroking began were significantly higher than those obtained after that period, but these higher levels gradually returned to baseline levels. This tendency appears more clearly in the negative attitude group. The HRs of the horses increased during the first 20 seconds immediately after the human subjects of the NA group started stroking them, but gradually reduced as the stroking continued. The results of subjective arousal levels suggest a decrease in tension by stroking horses. These results suggest that a certain affectional interaction may exist between humans and companion animals.     

THE SPIRITUAL LIMITS OF NEUROPSYCHOLOGICAL LIFE

Abstract. How neuropsychology is necessary but insufficient for understanding spirituality is explored. Multileveled spiritual requisites are systematically examined in terms of their neuropsychological constituents and limitations. The central “problem of integrity” is articulated via the “modularity” of our neuropsychology, and evidence is presented for disunities of self and consciousness. It is argued that the integrity of self or spirit is a contingent achievement rather than a necessary given. Integrating possibilities include belief, emotion, and relationships. Understanding integrity, and the transformations of self-surrender and sacrifice, may require explicitly stepping beyond neuropsychology and including the self in a larger system.