Investigating the Relation between Imagery and Perception: Evidence from Face Priming

The relation between imagery and perception was investigated in face priming. Two experiments are reported in which subjects either saw or imagined the faces of celebrities. They were later given a speeded perceptual test (familiarity judgement to pictures of celebrities) or a speeded imagery test (in which they were told the names of celebrities and asked to make a decision about their appearance). Seeing faces primed the perceptual test, and imaging faces primed the imagery test; however, there was no priming between seeing and imaging faces. These results show that perception and imagery can be dissociated in normal subjects. In two further experiments, we examined the effects of imaging faces on a subsequent face-naming task and on a task requiring familiarity judgements to partial faces. Both these tasks were facilitated by prior imaging of faces. These results are discussed in relation to those of McDermott & Roediger (1994), who found that imagery promoted object priming in a perceptual test involving naming partial line drawings. The implications for models of face recognition are also discussed.     

Generate and test: An alternative route to knowledge elicitation in an implicit learning task

Three experiments are reported, which examine generation of knowledge in the McGeorge and Burton (1990) invariant learning task. In this task, participants are exposed to 30 four-digit numbers containing an invariant "3". Following this participants then demonstrate a preference for novel numbers containing this invariant over numbers without it. Despite above-chance performance on this pseudo-memory test, participants appear unable to verbalize anything pertinent to the invariant. Here we introduce a novel version of this task, relying on generation of items rather than a preference test. We argue that this new task engages different processing resources, resulting in different patterns of performance. In Experiment 1, invariant learning was demonstrated using a novel fragment completion test. Experiment 2 found that suppressing articulation inhibited learning, implying that this test task accesses phonological knowledge. It is suggested that using the fragment completion test engages different processing resources during test from those in a preference test. Experiment 3 reinforces this position by demonstrating that knowledge appears to transfer across surface features, a result that seems to contradict recent findings by Stadler, Warren, and Lesch (2000). A resolution is offered, drawing on episodic accounts of implicit learning.     

Book reviews

DIMSOND, S. The Double Brain. Edinburgh: Churchill Livingstone. 1972.Pp. 229. £ 3.50.

ANDERSON, J. R. and BOWER, G. H. Human Associative Memory. Washington: V. H. Winston and Sons. 1973. Pp. 524. £ 8.55.

SOMMERHOFF, G. Logic of the Living Brain. London: John Wiley and Sons. 1974. Pp. 413. £ 5.75.

KLAUSMEIER, H. J., GHATALA, E. S. and FRAYER, D. A. Conceptual Learning and De-velopment. London: Academic Press. 1974. Pp 284. £ 7.00.

RATCLIFF, F. (ED.) Studies on Excitation and Inhibition in the Retina. A Collection of Papers from the Laboratories of H. Keffler Hartime. London: Chapman and Hall. 1974. Pp. 668. £ 8.50.

ROCK, I. orientation and Form. London: Academic Press. Inc. (London) Ltd. 1973-Pp. 165. £ 5.60.

BOWER, T. G. R. Devolopment in Infancy. Reading: W. H. Freeman and Co. 1974. Pp. 258. £ 2.90

CONNOLLY, K. J. and BRUNER,J. S. (Eds). The Growth of Competence. London: Aca-demic Press. 1974. Pp. 327. £ 6.80.

PIAGET, J. and INHELDER, B. (Translated by POmerans, A.) The Child's Construction of Quantities. London: Routledge and Kegan Paul. 1974. Pp. 285. £ 5.75.

GARNER, W. R. The Processing of Information and Structure. Potomac: Lawrence Erlbaum Associates. 1974. Pp. xi + 203. £ 6.00.

CARTERETTE, E. C. and FRIEDMAN, M. P. (Eds). Handbook of Perception. Vol. III. Bilogy of Perceptual System. London: Acadmic Press, Inc. (London) Ltd. 1973. Pp. 521. £ 00.00.     

Exact probabilities for contingency tables using binomial coefficients

The use of binomial coefficients in place of factorials to shorten the calculation of exact probabilities for 2 × 2 and 2 ×r contingency tables is discussed. A useful set of inequalities for estimating the cumulative probabilities in the tail of the distribution from the probability of a single table is given. A table of binomial coefficients with four significant places andn through 60 is provided.     

A new scaling technique for absolute judgments

The results of an experiment using the method of absolute judgments can be viewed as a matrix of conditional probabilities in which the rows represent stimuli and the columns responses. The cosine of the angle between two row vectors is a measure of the similarity of the corresponding stimuli. This cosine provides the basis for a method of scaling the stimuli. Unlike the method of paired comparisons, this new technique does not require arbitrary fixing of a unit of measurement. A numerical example is given.     

Deep Diving: Imagination,Intuition, and the Interpenetration of Minds

How do we help patients who come to us without access to feelings and without curiosity about themselves and others? The author suggests that the analyst’s imagination and intuition provide a channel or medium through which to apprehend aspects of the patient’s internal life, make contact and communicate with younger parts of the patient, and provide containment to these parts of the person. As the analyst engages her imagination in this way, communication channels open and shared states of consciousness between analyst and patient are created, thereby facilitating the interpenetration of minds and the opening up of previously closed object worlds. In the course of this work, compassion serves as a vehicle for truth, penetrating previously closed object relational systems. This kind of work poses risks for the analyst.