The influence of performance feedback on goal-setting and mental effort regulation

Goal-setting and mental effort investment may be influenced by the perception of success or failure. The aim of the current study was to investigate the dynamics of motivational intensity model using false performance feedback. Forty participants performed a demanding cognitive task over five successive (5 min) blocks. Participants received performance feedback of either progressive success or progressive failure. A number of psychophysiological variables were used to index mental effort investment and emotion, including: HRV components, blood pressure, skin conductance level, EEG, and facial EMG. Subjective estimates of mood, workload and motivation were also collected alongside performance measures. The success group experienced positive affect and a less pronounced decline in subjective motivation in response to a perception of successful achievement. In contrast, feedback of failure led to adverse changes in mood/motivation, but did not lead to the absolute withdrawal of effort, although trends in the psychophysiological data suggest that participants in the failure group were on the verge of abandoning the task. The implications of these findings are discussed within the context of goal-setting and effort regulation models.     

Improving multiple behaviors for colorectal cancer prevention among african american church members.

The WATCH (Wellness for African Americans Through Churches) Project was a randomized trial comparing the effectiveness of 2 strategies to promote colorectal cancer preventive behaviors among 587 African American members of 12 rural North Carolina churches. Using a 2 X 2 factorial research design, the authors compared a tailored print and video (TPV) intervention, consisting of 4 individually tailored newsletters and targeted videotapes, with a lay health advisor (LHA) intervention. Results showed that the TPV intervention significantly improved (p <.05) fruit and vegetable consumption (0.6 servings) and recreational physical activity (2.5 metabolic task equivalents per hour) and, among those 50 and older (n = 287), achieved a 15% increase in fecal occult blood testing screening (p =.08). The LHA intervention did not prove effective, possibly because of suboptimal reach and diffusion.     

The investigation of ear asymmetry by simple and disjunctive reaction-time tasks

In a disjunctive reaction-time task in which Ss responded to clicks presented to one ear while white noise was presented to the other, RT was significantly faster to stimuli presented to the left ear than to the right ear. In a simple reaction-time task, using the same stimuli. there was no difference in R T to stimuli presented to right or left ear. The results were discussed in relation to functional asymmetry of the cerebral hemispheres. and were taken to support a perceptual interpretation of the ear asymmetry effect.     

Locus of control and socialization

On the basis of classical association theory, it was predicted that an external locus of control would characterize undersocialization. This hypothesis was tested on a random sample of secondary school children, using a battery of self-report “socialization-delinquent personality” measures to assess degree of socialization. Factorial validity for the use of these measures was obtained from a factor analysis which uncovered a general factor of socialization, while evidence for convergent validity was derived from the relationship between these scales and teacher ratings of refractory behavior. Scores from the Child Nowicki-Strickland Internal-External Scale were found to predict undersocialization in the expected direction. Several possible interpretations of this relationship were suggested and a biosocial explanation was advanced to account for the possible simultaneous development of both externality and undersocialization.     

Book reviews

Postman, L. And Keppel, G. (Eds.). Norms of Word Association. New York and London: Academic Press. 1970. Pp. vi+ 467. £12.00.

Wolstenholme, G. E. W. and Knight, J. (Eds.). Taste and Smell in Vertebrates. London: J. & A. Churchill. 1970. Pp. x + 402. £4.00.

Tobias, J. V. (Ed.). Foundations of Modern Auditory Theory, Vol. I. New York and London: Academic Press. 1970. Pp. xv + 466. £10.50.

Hexmelin, B. and O'connor, N. Psychological Experiments with Autistic Children. Oxford: Pergamon Press. 1970. Pp. 142. £3.00.

Black, P. (Ed.). Physiological Correlates of Emotion. New York and London: Academic Press. 1970. Pp. xvi + 309. £6.30.

Baird, J. C. Psychophysical Analysis of Visual Space. Oxford: Pergamon Press. 1970. Pp. viii + 321. £4.50.

Flores D'Arcais, G. B. and Levelt, W J. M. (Eds.). Advances in Psycholinguistics. Amsterdam and London: North Holland. 1970. Pp. x + 454. £8.40.

Dodwell, P. C. Visual Pattern Recognition. Holt, Rhinehart & Wilson. 1970. Pp. 276. $9.00.

Gladwin, Thomas. East is a Big Bird. Oxford: University Press. 1970. Pp. 241. £4.75.

GULICR, W. L. Hearing: Physiology and Phychophysics. New York: Oxford University Press. 1971. Pp. viii+257. £4.50.

Plomp, R. and Smoorenburg, G. F. (Eds.). Frequency Analysis and Periodicity Detection in Hearing. Leiden: A. W. Sijthoff. 1970. Pp. xvi+482.

Jaffe, Joseph and Feldstein, Stanley. Rhythms of Dialogue. New York: Academic Press. 1970. Pp. 156. £3.95     

A comparison of two flash and two click thresholds in schizophrenic and normal subjects

The thresholds of fusion of paired flashes and paired clicks were compared. It was found that schizophrenics tended to show relatively higher click thresholds than normal subjects and in the most deteriorated schizophrenics two click thresholds tended to be higher than two flash thresholds.