Comparison of patients with Parkinson's disease or cerebellar lesions in the production of periodic movements involving event-based or emergent timing

We have hypothesized a distinction between the processes required to control the timing of different classes of periodic movements. In one class, salient events mark successive cycles. For these movements, we hypothesize that the temporal goal is a requisite component of the task representation, what we refer to as event-based timing. In the other class, the successive cycles are produced continuously. For these movements, alternative control strategies can optimize performance, allowing timing to be emergent. In a previous study, patients with cerebellar lesions were found to be selectively impaired on event-based timing tasks; they were unimpaired on a continuously produced task. In the present study, patients with Parkinson's disease were tested on repetitive movement tasks in which timing was either event-based or emergent. Temporal variability on either type of task did not differ between on- and off-medication sessions for the Parkinson's patients nor did patient performance differ from that of controls. These results suggest that the basal ganglia play a minimal role in movement timing and that impairments on event-based timing tasks are specific to cerebellar damage.     

Compensatory conviction in the face of personal uncertainty: going to extremes and being oneself

Study 1 participants' self-integrity (C. M. Steele. 1988) was threatened by deliberative mind-set (S. E. Taylor & P. M. Gollwitzer, 1995) induced uncertainty. They masked the uncertainty with more extreme conviction about social issues. An integrity-repair exercise after the threat, however, eliminated uncertainty and the conviction response. In Study 2, the same threat caused clarified values and more self-consistent personal goals. Two other uncertainty-related threats, mortality salience and temporal discontinuity, caused similar responses: more extreme intergroup bias in Study 3, and more self-consistent personal goals and identifications in Study 4. Going to extremes and being oneself are seen as 2 modes of compensatory conviction used to defend against personal uncertainty. Relevance to cognitive dissonance and authoritarianism theories is discussed, and a new perspective on terror managenment theory (J. Greenberg, S. Solomom, & T. Pyszczynski, 1997) is proposed.     

College students who wear watches: locus of control and motivational sources

119 undergraduate college students were administered the Rotter I-E Scale and the Motivation Sources Inventory. Scores were compared for a group of 66 students who were wearing watches and 53 students who were not wearing watches. The former had higher scores on External locus of control and higher scores on a measure of Instrumental Motivation as anticipated.     

Infants attend to second-order relational properties of faces

Two experiments investigated whether 7-month-old infants attend to the spatial distance measurements relating internal features of the human face. A visual preference paradigm was used, in which two versions of the same female face (one either lengthened or shortened, and one nonmodified) were presented simultaneously. In Experiment 1, infants looked longer at the nonmodified faces, which were determined to match the average distance relationships found in a sample of faces drawn from the same population. Longer looking times for modified faces were found in Experiment 2, in which the nonmodified faces were unusually long and the modified faces conformed to average distance measurements. It is proposed that infants’ attention to the spatial relations of internal face features is an optimal tool for lifelong face recognition.     

Differentiation and Intimate Partner Violence

ABSTRACT

This study explored the impact of differentiation of self on Intimate Partner Violence (IPV). We sought to determine if an individual's level of differentiation of self in a relationship adds to the variance accounted for in IPV perpetration by known risk factors, i.e., relational satisfaction, marital conflict, romantic jealousy, depression, and anxiety. Results indicated that differentiation of self in a relationship is a predictor for perpetration of physical intimate partner violence even after controlling for other known risk factors.     

Reviews

The Spirit of Solzhenitsyn by Olivier Clément, Search Press, 1976, 234 pp., £5.95.

Protestants in Russia by J. A. Hebly, Christian Journals Ltd., 1976, 192 pp., £1.50.

USSR ‐ Democratic Alternatives

(A collection of Essays & Documents) edited by Vadim Belotserkovsky, Achberger Verlaganstalt, 1976, 335 pp. No price.     

Reviews

Land of Crosses: The Struggle for Religious Freedom in Lithuania, 1939–1978 by Michael Bourdeaux, Augustine Publishing Company, Chulmleigh, Devon, 1977, xx+ 339 pp., £3.00. (Keston Book No. 12).

The Catholic Church, Dissent and Nationality in Soviet Lithuania by V. Stanley Vardys, East European Quarterly, Boulder, distributed by Columbia University Press, New York, 1978 xiii + 336 pp., $22.50.

Muslim National Communism in the Soviet Union: a Revolutionary Strategy for the Colonial World by Alexandre A. Bennigsen and S. Enders Wimbush, Center for Middle Eastern Studies, Publication No. 11, University of Chicago Press, Chicago and London, 1979, xxii + 267 pp., $7.95.

The Unknown Homeland translated by Marite Sapiets, Mowbrays, London and Oxford, 1978, vii+ 247 pp., £4.95 (Keston Book No. 13)

Detente and Papal‐Communist Relations, 1962–1978 by Dennis J. Dunn, Westview Press, Boulder, Colorado, 1979, 216 pp., £12.15.