Measuring reaction time without measuring movement time: A modification of the Hormann and Allen millisecond timer for the Commodore 64 or 128

It is frequently desirable to measure reaction time independently of movement time. The Hormann and Allen (1987) millisecond timer for the Commodore 64 or 128 can be modified to allow the measurement of reaction time with minimal movement time. A BASIC loader is provided for a keyboard version and an external switch version of the modified timer. Machine language code is provided for use with MONITOR, the machine language utility built into the Commodore 128.     

EFFECTS OF HIGH-PREFERENCE SINGLE-DIGIT MATHEMATICS PROBLEM COMPLETION ON MULTIPLE-DIGIT MATHEMATICS PROBLEM PERFORMANCE

The purpose of this study was to examine the effects of a sequence of three single-digit (1 digit × 1 digit) multiplication problems on the latency to initiate multiple-digit (3 digit × 3 digit) multiplication problems for 2 students in an alternative education school. Data showed that (a) during the preference assessment, both students selected the single-digit problems in a majority of the sessions, and (b) intervention resulted in a decrease in latency between problems for both students. Results are discussed in relation to using high-preference sequences to promote behavioral momentum in academic content areas.     

THE EFFECTS OF ORAL PRESENTATION PREVIEWING RATES ON READING PERFORMANCE

A multielement design was used to compare the effects of rapid oral presentation and slow oral presentation during listening previewing on rates of accurate oral rereading. The participants were 2 elementary students with reading skills deficits. For both students, rates of accurate oral rereading were higher when adults reduced their oral reading rates as students read silently.     

USE OF EXTINCTION AND REINFORCEMENT TO INCREASE FOOD CONSUMPTION AND REDUCE EXPULSION

Extinction and reinforcement contingencies were used to treat 2 children with feeding disorders. Positive reinforcement and avoidance extinction effectively increased food acceptance but also increased food expulsion. Reduced expulsion and increased swallowing were achieved by repeated presentation of expelled food, a second extinction component.     

EVALUATING MEASURES OF CONTEMPORARY SEXISM

Two recently published measures of contemporary sexist attitudes were examined and compared with a sample of 106 Canadian college students. Swim, Aikin, Hall, and Hunter's (1995) Modern Sexism scale was found to be an acceptable measure of sexist attitudes in terms of its internal reliability and its ability to predict other gender-related political attitudes. Although the Modern Sexism scale and the Neosexism scale (Tougas, Brown, Beaton, & Joly, 1995) were equally good at predicting support for the feminist movement and attitudes toward lesbians and gay men, the Neosexism scale had better internal reliability and exhibited stronger gender differences. Moreover, the Neosexism scale was superior at predicting value orientations relevant to modern prejudices.     

Ontology According to van Fraassen: Some Problems with Constructive Empiricism

This paper argues the case for ontological realism as against various present-day forms of conventionalist, instrumentalist, cultural-relativist, or anti-realist doctrine. In particular it takes issue with Richard Rorty's writings on philosophy of science – where these ideas receive their most extreme and provocative statement – and with Bas van Fraassen's more moderate 'constructive empiricist' approach. This latter entails ontological commitment to whatever shows up through trained observation or empirical research. However, it refuses to countenance realist claims concerning the existence of (as yet) unobserved entities and their role in explanatory theories premised on putative laws of nature. I maintain that van Fraassen's position is: (1) inadequate to account for our knowledge of the growth of scientific knowledge; (2) self-refuting since often undermined by examples which he himself supplies; and (3) incapable of mounting resistance to other, more wholesale (e.g., Rortian) varieties of anti-realist argument. Only by combining causal realism with a principle of inference to the best explanation can philosophy of science avoid these kinds of hyperinduced sceptical doubt.     

The Person/Environment Dynamics of Employee Empowerment: An Organizational Culture Analysis

Using an organizational culture framework, this case study examines the critical preconditions necessary for employee empowerment and highlights how the multiple cultures within one public bureaucracy differently impacted their implementation. SERVE, a large human service organization, initiated an employee empowerment program that contradicted and thus collided with many elements of its overall organizational culture. Despite the best intentions of the organizational leaders, upper management support, and opportunities for participatory decision making, the organization could not foster the critical preconditions needed for employee empowerment. Leaders had difficulty expanding the employees' power and promoting member inclusion. Concurrently, most employees rejected these new opportunities for control and distrusted the leader's intentions. Yet, despite the widespread rejection of these empowerment initiatives, most employees described their work lives as empowering. The role the local site subculture played in promoting employee empowerment is examined. We discuss how a localized (vs. system-wide) empowerment endeavor may be a more appropriate and feasible focus for public bureaucracies seeking to initiate greater staff empowerment. Particular attention is paid to the interaction between individuals and their environments, and how this interaction affects the empowerment process.     

The Effects of Response Repetitions on Sight Word Acquisition for Students with Mild Disabilities

Single response learning trials, defined in terms of the three-term contingency model, were compared with repeated response learning trials. The purpose of Study 1 was to assess the effectiveness and efficiency of single and repeated response learning trials on sight word remediation. In Study 1, one single response learning trial having one response opportunity per word was compared to one repeated response learning trial having five response opportunities. In Study 2, three single response trials were compared to three repeated response trials. In both studies, the training conditions were compared using an alternating treatments design. Measuring the cumulative number of sight words mastered showed the training conditions equally effective. However, measuring (a) the mean duration of training sessions, (b) the cumulative frequency of words mastered per session duration, (c) the mean number of training sessions per word required for mastery, and (d) the training time per mastered word showed that the single response condition was more efficient. Discussion focuses on the need to include training data when determining best practices for teaching.     

Encouraging College Males to Perform Testicular Self-Examination: Evaluation of a Persuasive Message Based on the Revised Theory of Reasoned Action1

This study evaluated the effect of a persuasive message derived from a revised version of the theory of reasoned action on the performance of testicular self-examination (TSE). Subjects (114 male college students) were randomly assigned to listen to a taped persuasive message challenging unfavorable outcome beliefs (as suggested by the theory of reasoned action), a message on testicular cancer information, or no message. All subjects then completed a questionnaire operationalizing the components of the theory of reasoned action (revised to incorporate self-efficacy). As predicted, there was a significant relationship between exposure to the persuasive message and self-reported TSE performance (χ²(2) = 15.66, p < .0001). Sixty-three (71.23%) of the subjects contacted at a 4-week follow-up reported performing the exam. Of those, 44.23% had heard the theory-based message, 36.54% had heard the informational message, and 19.23% had not been exposed to a message. A path analysis of the relationships among components of the theoretical model provided partial support for the hypothesized causal pathways between message exposure and TSE intention and behavior.