Book review

EVANS, R. M. The Perception of Color. New York: Wiley and Sons. 1974. Pp. xii + 248. £ 8.10.

ROSS, H. E. Behaviour and Perception in Strnge Enviroment. London: George Allen and Unwin. 1974. Pp. 171. £ 3.95. (Hardback), £ 1.95. (Peperback).

COOPER, J. R. BLOOM, F. E. and ROTH, R. H. The Biochemical Basis of Neuropharmacology. 2nd Ed. New York and London: Oxford University Press. 1974. Pp. 272. £ 2.50.

JOHNSON, F. N. (Ed.) Lithium Research and Teerapy. London: Acakemic Press. 1974. Pp. 570. £ 13.50.

GERGG, L. W. (Ed.) Cognition in Lerning and Memory. New York: Wiley. 1972. Pp. vii + 263. £ 5.85.

SCHIEFELBUSCH, R. L. and LLOYD, L. L. Language Perspectives-Acquisition, Retardation and Intervention. Macmillan: Baltimore, 1974. Pp 670. £ 7.95.

CHOMSKY, C. The Acquisition of Syntax of Syntax in Children form 5 to 10. Cambridge, Massa-chusetts: M. I. T. Press. 1969. Pp. 126.

Annual Review of Psychology. Vol. 25. Palo Alto, California: Annual Reviews Inc. 544 PP. $ 12.50.

HARRISON, B. Meaning and Structure: An Essay in the Philosophy of Language. New York: Harper and Row. 1972. Pp. 318. £4.65.

MACKINTOSH, N. J. The Psychology of Animal Learning. Academic Press. 1974. Pp. 730. £ 8.00.

BURES, J., BURESOVA, O. and KRIVANEK, J. The Mechanism and Application of Leao's Spreading Depression of Electroephalagraphic Activity. New York: Academic Press. 1974. Pp. 410. £ 14.15.

SOLSO, R.L. (ED.). Theories in Cognitive Psychology: The LOyola Symposium. Potomac, Maryland: Lawrence Erlbaum associates. 1974. £ 7.95.

MURDOCK, B. B. Jr. Human Memory: Theory and Data. Potomac: Erlbaum (distributed by Wiley). 1974. Pp. 362. £ 6.85.

REED, S. K. Psychological Process in Pattern Recogntion. New York: Academic Press. 1973. $ 13.95.

RABBIT, P. M. A. and DORNIC, D. (Eds). Attention and Performance V. London: Academic Press. 1975. Pp. 732. £ 16.00.     

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.     

Conditioned suppression or facilitation as a function of the behavioral baseline

Rats were exposed to a multiple schedule of reinforcement. During one component, a bar-press was followed by reinforcement only if it occurred between 15 and 20 sec after the previous response. This differential-reinforcement-of-low-rate (DRL) schedule produced a typical slow rate of responding. During the other component, reinforcement followed the first response to be emitted during limited periods of time which occurred at fixed intervals. These fixed-interval schedules with a limited hold produced higher response rates, described as `interval' or `ratio-like' behavior. Responding during the DRL component increased in frequency during a tone which ended with an unavoidable shock of low intensity, but decreased during the tone when the shock intensity was raised. The `interval' and `ratio-like' responding decreased in frequency during the tone at all shock intensities. Initial acceleration of the DRL responding appeared to be due to adventitious punishment of collateral behavior which was observed between the bar-presses. The more severe conditioned suppression during the fixed-interval components might be the result of the lower probability of reinforcement after any single response.     

Partial negative reinforcement: fixed-ratio escape

Rats were unable to sustain performance when eight bar-presses turned off shock (−FR 8). In a second experiment, thirsty rats were able to maintain a moderate response rate when performance on −FR 8 was also reinforced with water. Some rats continued to bar-press on −FR 8 after withdrawal of positive reinforcement, but at a much lower rate. A possible explanation of the results is that during intermittent escape conditioning in a free-responding situation the absence of shock itself acquires aversive properties.     

The effects of relative intensity of cue and marker on marked trace conditioning in pigeons

Pigeons were trained on trace conditioning procedures (autoshaping) in which a keylight conditioned stimulus (CS) was presented for 5 sec and followed after a 10-sec temporal gap by food. In Experiment 1, acquisition of conditioned responding to the CS was facilitated when it was immediately followed by a brief stimulus, but only when the brief stimulus was of greater intensity than the trace CS. In Experiment 2, this facilitation effect was found when a more intense brief stimulus followed the trace CS immediately, but not when it was delayed. In both experiments, responding to the target CS was compared within-subjects to that to a control CS, which eliminated factors such as second-order conditioning as an explanation for the facilitation effects. Together, the results of Experiments 1 and 2 suggest that a brief stimulus may mark immediately preceding events in memory and thus facilitate their association with delayed reinforcement only if the brief stimulus is relatively more intense, and thus more salient, than the target events. In Experiment 3, we found substantial generalization of this facilitation effect from the marked CS to the control CS and conclude that the results of Experiments 1 and 2 may underestimate the magnitude of these marking effects.     

The effects of signalled and unsignalled lick-dependent delays on the development of schedule-induced drinking in rats

Food pellets were programmed to be delivered to rats every 60 sec (Fixed Time 60-sec schedule), and the development of schedule-induced drinking was measured in terms of the amount of water consumed and the number of licks per inter-pellet interval. For some rats (masters) 10-sec delays in food delivery were dependent on licks. Yoked-control rats received food at the same time as their masters and independently of their own behaviour. In Experiment 1, in which the delays were signalled by a blackout, the master rats began to drink, but this schedule-induced behaviour then decreased to levels lower than those shown by the yoked controls. When the signalled delays were discontinued, the drinking of the master rats recovered. In Experiment 2, in which the delays were not signalled, the master rats did not develop as much schedule-induced drinking as the yoked controls, and discontinuing the delays led to only small increases in drinking. These results support the view that schedule-induced drinking is subject to control by its consequences.