Regional cerebral blood flow response in a patient with remitted global amnesia

A case of remitted global amnesia, believed to have residual left medial temporal lobe damage, is tested by the same recognition memory paradigm used by Wood, Taylor, et al. in the previous paper. On two different testing occasions, once using an intentional and once an incidental memory procedure, the patient's right occipital flows were inversely correlated with memory accuracy and the values were very close to the regression line for 10 normals relating occipital flow to memory accuracy. The left occipital flows did not fit the regression line, however. The results were interpreted as consistent with the notion that occipital flow is inversely related to medial temporal lobe activation. Another surprising feature of this case is the unexpected persistence of amnesia for a period from about 5 to 10 years before her episode to about 2 weeks after the episode, with recovery of memory functioning for the period since that time.     

Regional cerebral blood flow response during rest and memory activation in a patient with global amnesia

A college professor with a classical amnesic syndrome is described. He has a WAIS IQ of 130, but dramatic memory loss for episodes ranging from a few seconds ago all the way back to portions of his childhood. The amnesia was of sudden onset, 2 years prior to the current memory tests and regional cerebral blood flow measurements. The etiology is believed, though not conclusively proven, to be medial thalamic infarction. rCBF measurements were taken on six separate occasions, four resting baseline, one memory activation, using the previous procedure of Wood, Taylor, et al., and one carbon dioxide activation. The resting baseline showed extremely low flows throughout the cortex, with some hyperfrontal response on the first baseline. With CO₂ activation, however, there was brisk, uniform reactivity, with all sites showing increased flow. This suggested that there were no prominent areas of impaired vasomotor control or probable ischemic damage in the cortical surface. During memory activation, there was also a generalized increase in flow, especially in the frontal areas. This was in sharp contrast to the pattern for normals, described by Wood, Taylor, et al., which shows a slight overall decrease in flow from baseline to memory activation. The results are interpreted in light of Talland's proposal that the amnesic syndrome reflects an arousal failure, with premature closure and shutdown of memory processing, especially at retrieval. Here the arousal failure is interpreted as an inadequate restriction or focusing of cortical activation, with resulting pathologically diffuse flow increases.     

Physically disabled students and achievement orientation: Self-concept,curriculum track,and career aspirations

Little research has been done on the vocational mobility of physically disabled students (Overs, R. In J. S. Picou and R. E. Campbell (Eds.), Career behavior of special groups. Columbus, Ohio: Charles E. Merrill, pp. 177–198). A subset of data from a larger investigation on the achievement processes of youth was analyzed in two phases to describe disabled and nondisabled tenth-grade students on certain sociodemographic variables, high school curriculum track assignment, self-concept dimensions, and educational and occupational aspirations. Additionally, a process model specifying the presence or absence of physical handicaps as an ascribed status was analyzed using path analysis. Results suggest that students who report themselves as being physically disabled are not from specific social origins or differentially allocated to curriculum tracks; more importantly, they do not hold different physical or social self-conceptions or career aspirations. The multivariate analysis shows that disabled status is a significant antecedent only to academic self-concept, having a moderate, positive effect. This finding was interpreted as being a possible “overcompensation” in one particular field when there is a weakness in another. The lack of expected differences in other variables is also discussed.     

Conscious dream synthesis as a method of learning about dreaming: a pedagogic experiment

Stimulated by Freud's comments on the unique perspectives offered by "building up dreams by synthesis," the authors applied this idea to the St. Louis Psychoanalytic Institute's introductory course on the psychology of dreaming. Each student was assigned the task of purposefully and consciously synthesizing a dream, utilizing certain assigned information and meeting the specified criteria. In the use of this device, it was anticipated that the conscious active effort required to duplicate the usually passively experienced processes of dreaming and the unconscious dream work would lead to a deeper understanding and appreciation of the dream.     

Properties of the recombination of one-dimensional motion signals into a pattern motion signal

We have examined the human ability to determine the direction of movement of a variety of plaid patterns. The plaids were composed of two orthogonal sine-wave gratings. When the plaid components are of unequal spatial frequency or sometimes of unequal contrast, observers judge the direction of movement incorrectly. In terms of the two-stage model of Adelson and Movshon (1982), these errors may result from either a misjudgment in the perceived speeds of each of the components or a failure in the combination of one-dimensional-component movements into a coherent direction of motion of the two-dimensional plaid pattern, or both. A comparison of the perceived direction of motion of plaids with the relative perceived-speeds of the plaid component gratings suggests that both failures occur, but in different circumstances The relative perceived speed of the plaid components was measured with a spatial and a temporal forced-choice technique, the former leading to larger differences. Our results support the notion that the visual system decomposes a moving plaid into oriented components and subsequently recombines the component motions.     

Theoretical Orientations of New Zealand Psychologists: An International Comparison

Registered practicing psychologists in New Zealand (n = 221) were surveyed concerning their predominant theoretical orientation. Results were compared with findings obtained among Australian psychologists by Byrne and Reinhart (1990), British psychologists by Garrett and Davis (1995), and North American psychologists by Norcross, Karg, and Prochaska (1997a). The results showed that while New Zealand psychologists use cognitive approaches more often than both British and North American psychologists, they use behavioral and psychodynamic approaches less often. Overall, it was found that the eclectic approach is the most popular theoretical orientation obtained in surveys of Australian, New Zealand, and North American psychologists, in that no group subscribed exclusively to a single theoretical orientation.     

Adults' emotional states and recognition of emotion in young children

This study addressed the degree to which adults' emotional states influence their perception of emotional states in children and their motivation to change such states. Happiness, sadness, anger, or a neutral state was induced in adults, who then viewed slides of 4-year-old children who were actually experiencing various emotional states. Adults' own emotional states had little impact on their accurate recognition of children's emotions or on their motives for social action to change such emotions. However, adults' states did influence the intensity they assigned to children's emotions, with happy adults tending to rate some emotions as more intense for black children (sadness) and for girls (anger and neutrality). The base rates with which adults used different emotion labels also influenced judgments, increasing it for the recognition of happiness and reducing it for anger. The results are discussed in terms of the factors that influence whether or not emotional states affect judgment processes and the role of emotion labels in the effective recognition of ongoing emotional states. Also addressed is the consequence of adults' recognition of emotion in children for the effective socialization of emotion.     

Reliability of psychophysiological assessment

In order to assess the reliability of psychophysiological recording, 15 subjects were assessed on multiple response measures (forehead EMG and forearm flexor EMG, heart rate, skin resistance level, hand surface temperature and cephalic vasomotor response), under multiple stimulus conditions (baseline, self-control, cognitive and physical Stressors), on multiple occasions (Days 1, 2, 8 and 28). Three forms of reliability coefficients were computed for each response measure: coefficients on absolute scores, coefficients on change scores from baseline to stressful conditions and coefficients on percent change from baseline. Only frontal EMG appeared to have consistently high absolute reliability coefficients, with hand surface temperature having high reliability if sessions are repeated within 1 week. Heart rate was less consistently reliable. Treating the responses as relative measures did not increase their reliability; indeed, hand surface temperature was completely unreliable when examined in this fashion. Implications of this study for behavioral medicine, biofeedback and anxiety-based disorders research, as well as Lang's tripartite response system model of fear and emotion, are discussed.     

Measuring the economic impact of human resource programs

Methods that allow estimating the dollar impact of human resource programs are now available to Industrial/Organizational (I/O) psychologists and other human resource professionals. Dollar estimates running into the tens and hundreds of thousands of dollars (and higher) have been established for various recruitment, selection and training programs across a wide variety of white and blue collar jobs. Most of this work has gone largely unnoticed by mainstream business communities due in large part to the inability of psychologists and other human resource professionals to communicate their research findings in a manner that is clear and credible to organizational decision makers and consistent with typical business conventions. It is concluded that I/O psychologists and other technical human resource professionals should place more emphasis on adequately communicating cost-benefit estimates to managers and other organizational decision makers, and that managers and organizational decision makers should routinely request such estimates from internal professional staff members and/or outside consulting firms.John M. Rauschenberger is a personnel research consultant in the Workforce Research and Selection Systems Section of Ford Motor Company. Frank L. Schmidt is the Sheets Distinguished Professor of Human Resources at the University of Iowa. He is on the Editorial Board of theJournal of Applied Psychology, and has been the recipient of the James McKeen Cattell Award for Research Design.