An evaluation of methods for behavioral investigations of teleost audition

Auditory thresholds have been determined for the goldfish by six groups of workers and the data in the experiments varied by as much as 20–30 dB. In order to isolate the basis for this variability, auditory thresholds were determined using conditioned suppression of respiration and method of limits. These thresholds were very similar to those obtained with avoidance conditioning and a tracking method for threshold determination. Acoustic procedures were kept constant in the two series of experiments, and it appears that wide variation in auditory thresholds for goldfish shown in different experiments is due to acoustic conditions in the experiments.     

Psychopathology in children of parents with recurrent depression

We examined the prevalence of psychopathology in children of parents with recurrent major depression (n=61)and children of normal control parents (n=46).Rates of psychopathology in the children of depressed parents were consistently higher when compared either with the control children or with rates of disorder reported for nonclinically referred children from other studies. Forty-one percent of high-risk children met criteria for at least one psychiatric disorder compared with 15% of low-risk children. Significant differences between groups were found for affective disorders and attention deficit disorder, and a nonsignificant trend was noted for anxiety disorder, all of which were more prevalent in the children of depressed parents.This work was supported, in part, by a W. T. Grant Foundation Faculty Scholar Award, No. 8308700.     

Book reviews

Studies in Religious Fundamentalism. Ed. L. Caplan The Macmillan Press Ltd, 1987 ISBN 9 78033 419748 £29.50(h/b).

Trying Trialogues: Pluralism and Prejudicial Pluralism. David Kerr and Dan Cohn‐Sherbok (editors). Christians, Muslims and Jews, Conference of Christians, Muslims and Jews, Birmingham, 1984, no price given. pp.IV, 384     

The situation

A formulation for the explanation of behavior is needed to guide the work of the applied psychologist whose first task is to explain behavior. It can also serve as a coordinating framework for the basic research that centers around each of psychology's many constructs. This paper puts forward the notion that the appropriate framework reflects the intersection of numerous person and environment systems; in other words, that it is found in the structure of a situation. Continuity within the science of psychology is promoted if an appropriate structure is found in the classic situations of the experimental laboratory. A prototypical situation that is based on the major paradigms of instrumental learning is described. It has already shown considerable utility in organizing the investigation of behavioral determinants in a real-world setting, and its ability to clarify interrelationships among psychology's constructs also looks promising.Thanks are due to C. Cofer, J. Keenan, E. Mannucci, and M. Nadien for their helpful comments on a draft of this paper.     

Unavoidable gridshock without scrambling circuitry from a faradic source of low-radio-frequency current

A high-voltage radio-frequency stimulator was used as a source of motivational footshock in studies of conditional suppression. The circuit of the stimulator is presented schematically, then discussed in terms of affect induced by, gross behavioral response to, and electrical characteristics of, the stimulus. Near daily use of the stimulator across 6 months of formal assessment revealed that nonscrambled presentations of footshock via a grid of aluminum bars invariably resulted in stimulation of rat Ss and generated highly efficient conditional suppression of operant responding. While the stimulator was primarily designed to permit unconfounded presentation of gridshock in a 2,450-MHz microwave field, its simplicity and reliability suggest application in other situations requiring motivational shock.     

Consistency between motor activity and perceived direction of rotation

Three experiments were conducted to test the proposition that engagement in motor activity in a given direction favors the perception of stimulus movement consistent with that direction. Ss simultaneously turned a crank and viewed a stimulus capable of apparent reversal of direction.Experiments 1A and 1B demonstrated that the perceived initial direction of rotation was more stable when it was consistent with the motor activity of the viewer than when it was inconsistent. Experiment 2 demonstrated that when Ss were instructed to perceive a particular direction of rotation for a period of time they tended to engage in motor activity consistent withthatdirection.The results were interpreted as supporting an efference theory of perception.     

Book reviews

Nervous and Hormonal Mechanisms of Integration: Symposia of the Society for Experimental Bilogy, No. 20. Edited by G. M. Hughes. London: Cambridge University press. 1966. Pp. viii + 553. 75s.

Essential Works of Pavlov. Edited with an Introduction by Muchael Kaplan. New York: bantam Books. 1966. Pp. xiii + 392. $1.25.

Psycholinguistic Papers. Proceedings of the Edinburgh Conference 1966. Edited by J. Lyons and R. J. Wales. Edinburgh University Press. 1966. Pp. 243. 42s.

On Human Communication. By Colin Cherry. 2nd edition. London and Cambridge, Mass.: M.I.T. Press. 1966. Pp. xiv + 337. 80s.

Psycholigical Principles Appropvite to Socal and Cinical Problems. By John C. Raven. London: H. K. Lewis. 1966. Pp. xx + 187. 25s.     

An infrared device for detecting locomotor activity

An electronic device for detecting locomotor activity in the home cage of small animals is described. The system involves a dense array of infrared (IR) beams designed to function as switches and capable of penetrating plastic walls of standard rodent cages without operational decrement. The device is reasonably inexpensive, is simple to calibrate, can be used with groups of animals, may be used for extended periods without maintenance, and is reliable with different cages.