Studies in the Peripheral Retina: I. The Purkinje After-Image

Maslow, A. H., Ed. New Knowledge in Human Values. New York: Harper, 1959. Pp. 268. Reviewed by Henry Winthrop.     

Studies in Occupational Analysis: II. Originality

Validation is defined as a general scientific procedure for investigating the nature of reality, encompassing all scientific disciplines, regardless of the utilitarian value of the information. When the process is employed in the context of a discipline such as psychology, certain subcategories emerge whose interrelations, if viewed in the light of possible or intended uses of the collected information, demonstrate the interdependence of a variety of validation procedures some of which have been viewed in the past as separate entities. A hierarchical representation of purposes and procedures is presented to facilitate an understanding of their interrelations and interdependence.     

Studies of the Startle Pattern: II. Bodily Pattern

The effects of two different faking instructions on Orientation Inventory scores were investigated in five groups of university students. The faking sets tended to produce increased scores on task orientation and decreased scores on self orientation. Changes in interaction orientation scores were inconsistent. Results were compared with those obtained earlier by Bass.     

The study of emotional processes in communication: II. Peripheral blood flow as an indicator of emotionalization

Traditional methods of analyzing human peripheral blood flow (PBF) do not account for its continuous nature or small-scale variation. Sequel transformation is presented as a new methodology for measuring these variations. This analysis generates a richer record of aspects of activation of the autonomous nervous system than traditional interbeat-interval (IBI) measurement. Presumably, in addition to heartbeat (i.e., IBI), other information can be extracted that is consistent with the influence of several physiological and psychological factors. This kind of variation is reflected in the PBF signal. After determining and extracting relevant events from vascular volume data generated by sequel transformation, we demonstrate the use of template analysis to analyze patterns of events as time courses of activation. All procedures are included in the computer program VASC Analyzer.     

Studies on responding under fixed-interval schedules of reinforcement: II. The scalloped pattern of the cumulative record

Responding under fixed-interval schedules usually generates either scalloped or break-and-run cumulative records. Earlier, it was generally accepted that the characteristic pattern was the scallop, but in recent years there has been an increasing emphasis on the break-and-run pattern. The break-and-run pattern has been shown quantitatively to provide a good fit of certain fixed-interval patterns. In the present work, responding during fixed-interval 1000-second components of a multiple fixed-interval 1000-second fixed-ratio 50 responses schedule was examined in two rhesus monkeys. Even after responding had started in an interval, there was a high tendency for responding to accelerate over subsequent 100-second segments of the interval. In segments with responding, the rate increased from one segment to the next in 303 of 389 segments in one monkey and in 310 of 419 segments in the other. The size of the increase was substantial, the rate in the fifth segment after responding started being an average of 4.5 times higher than the rate in the first segment after responding started. Hence, the usual pattern of responding in individual intervals was of sustained and substantial acceleration, vindicating numerically the conclusion derived from inspection of the scalloped patterns of the cumulative records.     

Studies in Affective Reaction: II. Dependence of Affective Ratings upon the Stimulus-Situation

Meehl, Paul E. Clinical vs. Statistical Prediction: A Theoretical Analysis and Review of the Evidence. Minneapolis: Univ. Minnesota Press, 1954. Pp. 149. Reviewed by Henry Winthrop.     

Studies in olfactory acuity. II.: Relative detectability of n-aliphatic alcohols by the rat

The ability of albino and black rats to detect n-aliphatic alcohols in the vapour phase has been investigated and probit analysis used to evaluate the results. At median threshold (= 50 per cent, success level) detectability tends to increase by logarithmic increments as the number of carbon atoms in the molecule is increased. However, a similar but reverse relationship occurs between carbon chain length and the gradient of the probit regression lines; and detectability at the 85 per cent. success level, as estimated by interpolation, shows a trend towards oscillation. It is suggested that this finding can resolve the apparent conflict in the literature concerning the pattern of odour intensity in homologous series, and that it may reflect the influence of low water solubility in limiting response to high concentrations of longer chain alcohols.

When expressed as pressures, median threshold values for alcohols in the rat vary directly with saturated vapour pressures; when expressed as thermodynamic activities intermediate and longer chain alcohols appear to be equally stimulating, whilst short chain alcohols show decreasing activities as the series is ascended. In several of the relations considered the position of methanol and dodecanol appears anomalous.     

Studies in social influence: II. Instrumental and symbolic influence

In this article we have dealt with a critical analysis pertaining to the notion of the informational influence. We hereby show that in every inter-actionary situation, the judgments emitted by the source (influence agent) appear to contain informations on the judged objects from their elementary content and, at the same time, from their organisation, like indications on the source itself, on its purpose. In this manner, we have come to distinguish the instrumental influence from the symbolical influence. An experiment where the subjects have to judge the number of points appearing on the slides shows that this distinction reveals what happens in the process of influence.     

The Effects of Hippocampal and Area Parahippocampalis Lesions in Pigeons: II. Concurrent Discrimination and Spatial Memory

Two experiments were conducted to examine the effects of bilateral hippocampus (Hp) and area parahippocampalis (APH) lesions in pigeons on the acquisition of a visual and spatial task. In Experiment 1, pigeons were trained on three successive six-pair concurrent discrimination tasks, each using a novel set of stimuli. There was no difference between control unoperated pigeons and Hp-APH pigeons in terms of the number of sessions required to learn either the first, second, or third concurrent discrimination task. In Experiment 2, the same pigeons were trained on an open-field spatial task similar in many ways to the radial-arm maze task used with rats. In contrast to the absence of impairments on the visual concurrent discrimination task, pigeons with Hp-APH lesions were severely impaired on the acquisition of the spatial task. These findings support the view that the Hp-APH in pigeons is important for the processing of spatial, rather than visual information.     

Studies in mathematical theory of human relations. II

In continuation of previous studies, relations are studied between two classes of population, of which one is characterized by a much greater ability to organize and supervise the productive activities of the other. Under some special and rather simple assumptions, it is shown that this kind of interreaction results first in an increase of the ratio of the cumulative results of productive activities for the two classes in favor of the first. With time, however, this ratio reaches a maximum and declines. An expression for the life span of such organized classes is obtained.In the second section, a study is made of possible non-uniformities of spatial distribution of the population. Some possible applications are made to the theory of the variation of the ratio of urban to rural population, showing how that ratio may increase with increasing total population.     

Experimental Studies in Ocular Behavior: II. Ocular Inadequacies in Epileptic Patients

The Allport-Vernon-Lindzey Study of Values and the Brown Modification of the Thouless Test of Religious Orthodoxy were administered to 120 male and female students in introductory psychology. Measures of anxiety, self-esteem, authoritarianism, and humanitarianism were also administered to the Ss in an effort to determine whether the two measures of religiosity would yield different personality and attitude profiles of the “religious” individual. A significant positive correlation was found between authoritarianism and the Thouless Test and between humanitarianism and the Study of Values religious measure. All other correlations involving the two measures of religiosity were found to be nonsignificant. These findings lend support to the notion that using two divergent measures of religiosity does result in the formation of different profiles of the “religious” individual.     

Studies in subjective probability II: Dilemmas of chance

The study examines guessing patterns in situations where outcomes have an unequal probability of occurring. It is shown that people will not always predict the most probable outcome if this is an extreme, "unrepresentative" value (Experiments I and II). It is also demonstrated that predictions are influenced by which questions are asked (for instance, if a point prediction or an interval prediction is called for). Thus a sequence of questions can lead to incorrect (suboptimal) predictions, even if each answer is perfectly logical in itself. In this case, most subjects prefer to be consistent rather than being "rational", making the final prediction dependent upon the order in which decisions are made (Experiments III-V).