A moving average model for sequenced reaction-time data

Reaction times are often collected in order to study the durations of hypothesized subprocesses. In many important cases, reaction times are collected for a sequence of tasks in which the processing for one task is a subset of the processing required for the next in the sequence. Data of this sort have been analyzed by multiple-regression methods. Here we propose a more sophisticated moving average model for such data. We show that ordinary multiple-regression methods produce estimates that are consistent, but not efficient, and that the usual R² statistic may provide a misleading impression of goodness of fit. One consequence of the suggested statistical model is that it allows the same quantity of data to be used to fit a psychological model to a larger range of tasks.     

Father-absent women: Self-concept and modes of relating to men

Four groups of college-age women were used to determine the relationship between absence of father in childhood and adult self-concept and interpersonal relationships with men. Groups consisted of 15 father-present subjects who came from intact homes; 15 father-absent (FA) subjects with no older brothers who experienced the death of their father early in life; 15 FA subjects with no older brothers who experienced father loss due to divorce; and 12 FA subjects with one or more older brothers whose parents were divorced. The Tennessee Self-Concept Scale and a self-report questionnaire of modes of relating to men were the dependent variable measures. Results revealed no significant differences among groups in most areas of self-concept or interpersonal relationships with both older and age-peer men. Only in social self-concept and nurturance behavior with age-peer men were significant differences observed. Thus, only partial support of the hypotheses of differences was obtained. Reasons for the departure between earlier and present results are proposed.This article is based on a master's of arts thesis completed by the first author (now at the University of Utah) under the direction of the second author.     

Effects of Alprazolam on Complex Human Functioning1

Benzodiazepines can reduce anxiety, can have favorable effects upon sleep, and may diminish problems that interfere with patients' quality of life. On the other hand, these drugs can generate transient anterograde amnesia and may diminish aspects of task performance. Research on the impact of alprazolam and other “tranquilizing” drugs has generally focused on tasks that remain below the complex efforts of managerial or professional personnel. Alprazolam-induced reduction of anxiety under challenging conditions might aid complex task performance, yet anterograde amnesia might interfere. In the present research, managers participated in validated complex simulation tasks. In a double-blind, dual crossover design, placebo, 0.5 mg, or 1.0 mg alprazolam was administered on 2 occasions during the task day. Drug treatment diminished performance on measures that require sequential actions but improved performance on measures less subject to short term memory but more determined by long-term style of functioning. Thus, depending on task requirements, positive or negative alteration of performance might occur.     

Community-referenced leisure skill clusters for adolescents with multiple disabilities

We evaluated the effectiveness of a training package used to teach student-selected community-referenced leisure skill clusters — ordering a pizza-to-go and renting a video from a local vendor — to two adolescents with multiple disabilities. The adolescents were taught the leisure skills (e.g., ordering the pizza) as well as related behaviors necessary to perform those leisure skills (e.g., using a phone, interacting with the delivery person, cutting and serving pizza, cleaning up). The students were taught functional skill clusters, problem-solving skills, and assistance-seeking skills. Training consisted of didactic instruction, feedback, a least intrusive prompting procedure for incorrect responses, and verbal praise and natural consequences for correct responses. Simulation training was conducted at school and in vivotraining was conducted in the local community. A multiple baseline design demonstrated the controlling effects of treatment. Also, follow-up probes conducted up to five months after treatment showed these students maintained treatment gains. Applied issues related to the efficiency of the training package, general and specific skills training, and factors influencing skill maintenance are discussed.     

Brief report: Validation of a reinforcer survey for use with geriatric patients

This paper describes a Geriatric Reinforcer Survey (GRS) which expands upon a previous Reinforcement Survey Schedule (RSS) developed by Cautela and Kastenbaum (1967). The GRS, an instrument designed to quickly assess reinforcer preference in geriatric populations, has two formats, one for individuals over 65 years of age who are still able to comprehend and write, and one designed to be filled out by relatives and staff familiar with an individual over 65 years of age who can no longer comprehend or write well. Reinforcer preference was determined by giving the GRS to a total of 107 geriatric persons in both home and institutional settings. Test-retest reliability was assessed on a subsample of 71 individuals over a 10-14-day period and was found to be r_s = 0.608, p <0.01 using the Spearman Rank-Order Correlation Coefficient. This indicated that the GRS had reasonable test-retest reliability. The validity of having a relative or familiar staff person fill out the GRS for a specific individual was also tested. Results of 43 administrations of the GRS to relatives of a geriatric person, using the Spearman Rank-Order Correlation Coefficient, showed a correlation of r_s = 0.488, p <0.01 when the responses of that person were compared to those of the individual. Results of 17 administrations of the GRS to staff familiar with a particular patient were r_s = 0.436, p < 0.05 when compared to responses made by the individual. This indicates that the GRS might be useful in structuring interventions for individuals who are incapacitated, and groups of geriatric persons. The GRS also has the potential to be a valuable research tool.