M.T.S.: An adaptable microcomputer-based testing system

An Apple II + computer-based human testing system is described. The system, which was developed using the Pascal language, provides library units of low-level procedures to rapidly access a clock, collect responses, control video output, control a touch-sensitive monitor, and display high-resolution graphics. Built-in hardware and software checks provide a high degree of system reliability. Use of easily altered text files for control of trials within a task and inclusion of and ordering of tasks within a session allows the system to be readily adapted.     

Seclusion rates and patient census in a maximum security hospital

Seclusion incidents were studied irr an undercrowded maximum security hospital where seclusion is used in response to episodes of violent or disruptive behavior. Population-based seclusion rates for days with an above-mean census were compared with those for days with a below-mean census. Contrary to expectations derived from studies of overcrowded prisons, the total seclusion rate was higher under low census conditions. Although the seclusion rate for parasuicide incidents was higher under high census conditions, seclusion rates for battery, assault, and disorderly conduct incidents were each higher under low census conditions. These findings are interpreted as indicating that correctional officers observe a smaller proportion of battery, assault, and disorderly conduct incidents under high census conditions. Such underdetection must be taken into account, along with underreporting, in studies of intrainstitutional incidents.     

The management of children''s distress in response to painful medical treatment for burn injuries

The purpose of the current study was to develop an initial assessment of the efficacy of astress-management program designed to reduce the behavioral distress of children undergoing highlypainful medical treatments for their burn injuries. The stress-management program was delivered to 4 male patients, ages 5–12 yr and its effects assessed in a combined multiple-baseline and reversal design. Results indicated that the program was moderately effective at reducing behavioral distress during the burntreatment procedures for 3 of the 4 patients and less effective with the fourth. However, the design also revealed that the presence of a therapist to coach the patient in the use of these techniques was essential and that distress levels rose substantially on days when there was no therapist present. Finally, speculations concerning the factors responsible for the effectiveness of the stress-management program as well as its reduced efficacy with 1 S were discussed.     

False physiological feedback and emotion: Experimenter demand and salience effects

Four experiments examined the hypothesis that the Valins (1966) false physiological feedback effect with attractiveness ratings of slides is due to experimenter demand. Experiments 1 and 2 showed significant feedback effects with 5-sec feedback periods, previously reported by Barefoot and Straub (1971) to be too brief a time to search the slides for a cause of the apparent physiological arousal. Experiments 3 and 4 had 17 variations of instructions (emotional, nonemotional), stimuli (slides of people, scenic tourist slides), and type of feedback information (heart rate, eyeblink, or none). The typical false feedback effect was found under many conditions that did not seem to meet the presumptive attributional requirements for the effect. In Experiment 4, only subjects who said they were supposed to rate feedback slides higher showed the effect, regardless of instructions, stimuli, or type of feedback. The overall results are interpreted in terms of experimenter demand and stimulus salience effects.     

Goals: an approach to motivation and achievement

This study tested a framework in which goals are proposed to be central determinants of achievement patterns. Learning goals, in which individuals seek to increase their competence, were predicted to promote challenge-seeking and a mastery-oriented response to failure regardless of perceived ability. Performance goals, in which individuals seek to gain favorable judgments of their competence or avoid negative judgments, were predicted to produce challenge-avoidance and learned helplessness when perceived ability was low and to promote certain forms of risk-avoidance even when perceived ability was high. Manipulations of relative goal value (learning vs. performance) and perceived ability (high vs. low) resulted in the predicted differences on measures of task choice, performance during difficulty, and spontaneous verbalizations during difficulty. Particularly striking was the way in which the performance goal-low perceived ability condition produced the same pattern of strategy deterioration, failure attribution, and negative affect found in naturally occurring learned helplessness. Implications for theories of motivation and achievement are discussed.     

Detection and identification thresholds for consonant-vowel syllables

Detection and identification thresholds were obtained for 6- and 10-year-old normal children and normal adults using five-formant synthesized consonant-vowel ([baHdflrfea]) stimuli. Sixyear-old children were found to have poorer detection than adults, just as they do for pure tones. For the identification task, the slopes of the performance-intensity functions were more shallow for 6-year-old children than for 10-year-olds and adults. Consequently, compared with 10-yearolds and adults, 6-year-old listeners require a greater increase in stimulus intensity above detection threshold to identify these stimuli at a high performance level. The influence of acoustic characteristics of the stimuli on all listeners is also discussed.