Temporal and spatial effects in luminance discrimination

Luminance difference thresholds (ΔI) were obtained by a successive and a simultaneous method of presenting the stimuli Spatial and temporal separation between the fields was the independent variable while other variables as stimulus size, luminance, retinal area of stimulation and duration were kept constant ΔI was less for simultaneously presented stimuli than for successively presented stimuli This was related to spatial and temporal interaction effects such that the greater the spatial interaction between simultaneously presented fields, the greater the discriminability while the greater the temporal interaction between successively presented fields, the less the sensitivity to luminance differences. It was suggested that the basis of the luminance discrimination may be different under conditions of temporal interaction than under conditions of spatial interaction between the fields.     

Book reviews

Contemporary psychology Experiments: Adaptations for Laboratory. By John Jung and Joan Bailey. London and New York: Wiley. 1966 Pp. xiii + 155. 238.

A Textbook of Psychology. Second Edition. By D.O. Hebb. Philadelphia and London: W.B. Saunders & Co. 1966. Pp xvi + 353. Pound2.

Behaviour Therapy Techniques: A Guide to the Treatment of Neuroses. By Josweph Wolpe and Arnold A. Lazarus. Oxford and London: Pergamon Press. 1966. Pp. ix + 198. 21s.

Motivated Learning: a Developmental Study from Birth to the Senium. By Miriam E. Hebron. London: Methuen. Methuen's Manuals of Modern Psychology. 1966. Pp. 264. 35s.

Human Brain and Psychological Processes. By A.R. Luria. Translated by Basil Haigh. New York and London: Harper & Row. 1966. Pp.xix + 587. £5 $14.50.

Higher Cortical Functions in Man. By A. R. Luria. Translated by Basil Haigh. London: Tavistock Publications. 1966. Pp xvi + 513. £6 6s.

Productive Thinking. By Max Wertheimer. Edited by Michael Wertheimer. social science Paperbacks. London: Tavistock Publications. 1966. Pp xvi + 302. 30s.

Problem Solving: Research Method and Theory. Edited by B. Kleinmuntz. London and New York: Wiley. 1966. Pp. ix + 406. 53s.

Human Conceptual Behavior. By Lyle E. Bourne, Jr. Boston: Allyn and Bacon. 1966. Pp. viii + 139. $2.50.

Attraction and Hostility. An Experimental Analysis of Interpersonal and Self Evaluation. By albert Peptone. London: Tavistock Publications. 1966. Pp. ix + 234. 30s.

Ability Structure and subgroups in Mental Retardation. By John Clausen. London: Macmillan. Washington: spartan Books. 1966. Pp. viii + 208. 80s.

The Biologiv Basis of Schizophrenia. By Jon L. Karlsson. springfield. Illionois: Thomas. 1966. Pp.xi + 77. $4.75.

Psychology for Psychiatrists. By C.G. Costello. London: Commonwealth and Unversity Library, pergamon Press. 1966. Pp. 328. 25s.

Science and theory of Psychoanalysis. Edited by Irwin G. Sarason. London: Van Nostrand. Insight Book No. 26. 1965. Pp xiii + 205. 14s.

Aspects of Learning and Memory. Edited by D. Richter. London: heinemann. 1966. Pp. x + 185. 35s.

The Spiral After-Effect. By Harry C. Holland. London: pergamon. 1965. Pp.xii + 99. 35s.

Dynamics of Response. By J.M. Notterman and D.E. Mintz. London and New York: Wiley. 1965. Pp. 277. 70s.

Contrary Imaginations: A Psychological Study of the English Schoolboy. By Liam Hudson. London: Methuen. 1966. Pp. vii + 181. 25s.

The Structure of Association in Language and Thought. By James A. Deese. London: Oxford University Press: Johns Hopkin Press. 1960. Pp. xiii + 216. 52s.

A source Book in the History of Psychology. Edited by R. J. Herrnstein and E.J. boring. London: Oxford University Press; Harvard University Press. 1965. Pp. xvii + 636. £5.     

Concurrent measurement of heart rate and instrumental avoidance behavior in the Rhesus monkey

A graphical method has been developed for the concurrent recording of heart beats and lever responses during behavioral experiments. The EKG signal fed into any DC amplifier goes to a fixed level trigger circuit and relay driver with its own power supply. The signal from this drives any standard cumulative recorder. Lever response rates are recorded concurrently on an additional cumulative recorder using the same paper speed.     

Suitability of the IBM XT,AT, and PS/2 keyboard,mouse, and game port as response devices in reaction time paradigms

The IBM PC keyboard is a convenient response panel for subjects in a reaction time task when the stimuli are presented on the same machine. However, there is a mean delay of about 10 msec and a random error of ±7.5 msec (±5 msec on the AT or PS/2). Our analyses show that for typical single response experimental situations, this added variance is acceptable. With mouse buttons, timing resulted in a delay of 31 ±2 msec if the mouse ball was steady but 45 ±15 msec if it was moving, and a 25-msec refractory period before a second response could be detected. With keys connected to the game port, timing was accurate to 1 msec. For timing the interval between two nearly simultaneous responses, only the game port method is recommended. Any research application should provide an external check on reaction timing accuracy and should correct any mean error.     

Analogy Between Quantum and Cell Relations

Relations occur on all levels of systems. Following a major assumption of generalized quantum theory, namely that the principles of quantum mechanics will occur on higher system levels as well, it was investigated in an a posteriori analysis of pre-existing data whether relational patterns found for two-photon experiments are similarly performed by two cell-populations. In particular, the typical pattern in outcomes of two-photon entanglement experiments was extrapolated to discover similar patterns of relationships in the cellular biological system of the Ciliate Paramecium caudatum. In the former case we find one photon assuming a particular state when being measured and the other assuming a correlated state with regard to the first particle. From a perspective of degrees of freedom (df) the author interprets this outcome as follows: Each particle has only one df for assuming a particular state (e.g. its spin). When measured this is leading to a pattern: They use their two degrees of freedom for establishing a relation among them (particle-to-particle) and for a relation with the environment (particle-to-measurement). If this pattern is unique then we should find it also in cell-to-cell relationships. It was suggested to consider causations in cell-to-cell relations as the analogue to the relationship between the quantum particles (see above) and the dependence of repeating the experiments as the analogue to the measurement event in the quantum experiment. It was hypothesized that in a relational system of two cell populations only one should be sensitive to the repetition of the experiment. The other population, however, should establish a relation with the first one. Since the author had successfully performed experiments with pairs of cell populations that were separated with glass barriers from each other but having effects on each other (Fels in PLoS One 4:e5086, 2009), the system was perfectly well suited for testing the hypothesis. The assessed cell variable was cell division. An a posteriori analysis of three similar experiments confirmed that when populations were in a relation with each other, only one of them stood in relation with the repetition of the experiment.     

Disequilibrium in the mind, disharmony in the body

Although it is generally acknowledged that experiences of frustration, confusion, and anxiety are embodied phenomena, very little is known about how these processes modulate presumably unconscious, but constantly present, subtle bodily movement. We addressed this problem by tracking the low-level dynamics of body movement, using 1/f noise, pink noise, or "fractal scaling", during naturalistic experiences of affect in two studies involving deep learning and effortful problem-solving. Our results indicate that body movement fluctuations of individuals experiencing cognitive equilibrium was characteristic of correlated pink noise, but there was a whitening of the signal when participants experienced states that are diagnostic of cognitive distress such as anxiety, confusion, and frustration. We orient our findings within theories that emphasise the embodied nature of cognition and affect and with perspectives that view affective and cognitive processes as emergent products of a self-organising dynamical system (the brain) that is inextricably coupled to the body.     

Making Connections in Math: Activating a Prior Knowledge Analogue Matters for Learning

This study investigated analogical transfer of conceptual structure from a prior-knowledge domain to support learning in a new domain of mathematics: division by fractions. Before a procedural lesson on division by fractions, fifth and sixth graders practiced with a surface analogue (other operations on fractions) or a structural analogue (whole number division). During the lesson, half of the children were also asked to link the prior-knowledge analogue they had practiced to fraction division. As expected, participants learned the taught procedure for fraction division equally well, regardless of condition. However, among those who were not asked to link during the lesson, participants who practiced with the structurally similar analogue gained more conceptual knowledge of fraction division than did those who practiced with the surface-similar analogue. There was no difference in conceptual learning between the two groups of participants who were asked to link; both groups performed less well than did participants who practiced with the structural analogue and were not asked to link. These findings suggest that learning is supported by activating a conceptually relevant prior-knowledge analogue. However, unguided linking to previously learned problems may result in negative transfer and misconceptions about the structure of the target domain. This experiment has practical implications for mathematics instruction and curricular sequencing.