Perceptions of assertive behavior: Sex combination,role appropriateness,and message type

Eighty-four male and 84 female subjects, divided into high, moderate, and low groups on the basis of sex-role stereotyping, watched videotapes of two-person interactions where positive and negative assertive messages were sent by male and female actors to male and female receivers. Subjects rated the level of assertion and the social acceptability of each message. Results indicated that while all messages were rated as relatively assertive, negative messages were perceived as more assertive and less socially acceptable than positive ones. Subjects also rated male senders as more assertive than female senders when the message type was role inappropriate for the subjects but rated female senders as relatively more assertive when the message type was role appropriate for them. Messages from female senders were rated as more socially acceptable than messages from male senders. Finally, messages to male receivers were rated as more acceptable than messages to females, especially by male subjects when the sender was male. Thus, both sex-role stereotypes and situational expectations appear to influence perceptions of level of assertion, and more assertive messages are perceived as less socially appropriate.     

Meeting novel experimental needs with an Apple Pascal controlled interfacing system

In this article, we describe how to combine an inexpensive interface with an independent timing card to solve some common timing and programming problems. Problems were encountered when we tried, by modifying commercial software, to create novel programs that would accurately control events in our operant conditioning chambers. The solution was to combine a Life Science Associates (LSA) Apple Interfacing System with an Applied Engineering Timemaster II H.O. timing card. Three aspects of the solution are described: (1) LSA’s interfacing hardware; (2) the Timemaster II H.O. timing card; and (3) the Pascal commands necessary to access the timing card. An example, a program to control a concurrent variable-interval schedule, shows how the timing card is used in conjunction with the interface to control and monitor experiments. The system offers many advantages over earlier researcher-built approaches and provides a flexible, accurate, and inexpensive alternative to commercial systems.     

Changing industry to continuous operations: Different strokes for different plants

A survey method was designed to evaluate the effect of shift work on industrial workers and to develop recommendations for 7-day around-the-clock production work systems. A Work-Sleep Survey was then offered to 2,340 hourly and salaried workers at four plants. Each plant was in the rubber and plastic products industry and on 5-day around-the-clock operations using permanent shifts. Of the total workers, 90.38% responded to the survey. The results agree with the findings of a previous survey, offered to workers through their unions, using many of the same survey items. The plants were found to differ in worker demographics, habits, and preferences. This survey method is helpful as an aid for the design and evaluation of shift-work systems tailored to specific worker and plant requirements.     

A simple,inexpensive stimulus waveform generator

A simple circuit for a sine wave generator is described. The total cost for construction is approximately $30.00. At present, the unit is used to generate a sinusoidally modulated light stimulus for steady state visual evoked response experiments. Modifications of the circuit for other applications are discussed.