Colour constancy in goldfish and man: influence of surround size and lightness

Colour constancy was investigated by using a series of 10 simultaneously presented surface colours ranging in small steps from green through gray to red-purple. Goldfish were trained to select one medium test field when the entire setup was illuminated with white light. In the tests, either red or green illumination was used. Colour constancy, as inferred from the choice behaviour, was perfect under green illumination when the test fields were presented on a gray or a white background, but imperfect on a black background. Under red illumination and a white background, however, colour constancy was overcompensated. Here, a colour contrast effect was observed. The influence of background lightness was also found when the surround was restricted to a narrow annulus of 4-11 mm width (test field diameter: 14 mm). By applying colour metrics it could be shown that the von Kries coefficient law can describe the overall effect of colour constancy. For an explanation of the effect of surround size and lightness, lateral inhibitory interactions have to be assumed in addition, which are also responsible for simultaneous colour contrast. Very similar results were obtained in experiments with the same colours in human subjects. They had to name the test field appearing 'neutral' under the different illumination and surround conditions, as tested in the goldfish experiment.     

Students' perspectives on their high school experience

This study explored students' levels of belonging and engagement in high school by obtaining their perspectives on the instruction, teachers, friends, and activities in their school. We interviewed 33 students from seven comprehensive high schools in Richmond, Virginia. Students indicated that they were more engaged when the instructional program included authentic learning experiences, teachers who provided challenging activities and showed interest in student learning, and a school day that supported interpersonal relationships with peers and adults. It was concluded that, to promote belonging and engagement, school personnel should attend to the quality of student learning and relationships.     

The Impact of Leadership Style on Global Management Practices1

A study was conducted to explore the impact of differences in leadership style on the practice of global leadership and management. Data were collected from 391 senior managers from a global organization and 1,701 of their direct reports, 358 straight-line supervisors, and 266 dotted-line supervisors. ANOVA results indicate that transformational leaders were rated significantly higher on all behaviors by their direct reports than were transactional leaders. Straight-line supervisors rated transformational leaders significantly higher on managing change- and relationship-management behaviors, whereas dotted-line supervisors rated transformational leaders higher on learning orientation. Finally, transformational leaders were significantly more self-aware (greater congruence in self vs. direct reports' average ratings) regarding the practice of these behaviors. implications for future research are discussed.     

Short versus long term gains of a cognitive-behavioral social skills program targeting the giving and receiving of criticism

Seventy-four university undergraduates (40.2% male and 59.8% female) reporting difficulty in giving and receiving criticism were randomly assigned to either a training group consisting of cognitive behavioral criticism skills including behavior rehearsal, modeling, coaching, cognitive restructuring, or to a control group. Dependent measures were given at pre-test, post-test, and one year follow-up. Included were self-report measures consisting of Fear of Negative Evaluation (FNE), Criticism Concerns Scale (CCS), Criticism Self-Esteem Giving and Receiving Scales, and behavioral role-play measures consisting of judges’ global ratings of subject’s verbal and nonverbal criticism behaviors in role-play scenarios with a live actor. Results for the self-report measures, FNE, and Criticism Self-Esteem Receiving showed both training program and control groups improved at post-test, but only the training program group maintained gains at one year follow-up. For the CCS and Criticism Self-Esteem Giving, the training program group improved over time, yet was only significantly different from control group at post-test. Results were discussed in terms of the pro-active nature of giving criticism versus the more reactive nature of receiving criticism.     

TREATING SELF-INJURY: WATER MIST SPRAY VERSUS FACIAL SCREENING OR FORCED ARM EXERCISE

In three experiments, the effect of water mist spray on self-injurious and collateral behaviors was compared with either facial screening or forced arm exercise. Water mist spray was as effective as facial screening in suppressing face-slapping in Experiment 1. However, it was not as effective as facial screening for self-injurious finger-licking in Experiment 2 or forced arm exercise for excessive ear-rubbing in Experiment 3. These results suggest that while water mist spray is effective, it may be less so than alternative procedures. In Experiments 2 and 3 there was a consistent decrease in the occurrence of untreated maladaptive behaviors. In addition, there was a moderate increase in appropriate social interaction in Experiment 2 and a substantial increase in Experiment 3.     

Effects of perceived weight discrimination on willingness to adopt unhealthy behaviours: influence of genomic information

Objective: Weight-based discrimination negatively influences health, potentially via increased willingness to engage in unhealthful behaviours. This study examines whether the provision of genomic obesity information in a clinical context can lead to less willingness to engage in unhealthy eating and alcohol consumption through a mediated process including reduced perceptions of blame and discrimination.

Design: A total of 201 overweight or obese women aged 20–50 interacted with a virtual physician in a simulated clinical primary care environment, which included physician-delivered information that emphasised either genomic or behavioural underpinnings of weight and weight loss.

Main Outcome Measures: Perceived blame and weight discrimination from the doctor, and willingness to eat unhealthy foods and consume alcohol.

Results: Controlling for BMI and race, participants who received genomic information perceived less blame from the doctor than participants who received behavioural information. In a serial multiple mediation model, reduced perceived blame was associated with less perceived discrimination, and in turn, lower willingness to eat unhealthy foods and drink alcohol.

Conclusion: Providing patients with genomic information about weight and weight loss may positively influence interpersonal dynamics between patients and providers by reducing perceived blame and perceived discrimination. These improved dynamics, in turn, positively influence health cognitions.     

Synonym and antonym pairs in the detection of dichotically and monaurally presented targets: Competing monaural stimulation can generate a substantial right ear advantage

Aligned pairs of spoken words were presented, and the subject timed in detecting the presence or absence of a prespecified target. The target, if present, was paired with either its synonym or its antonym or an unrelated word. If the target was absent, mutually synonymous, antonymous or unrelated word pairs occured. In experiment 1, presentation of the word pairs was dichotic, and in experiment 2 the same stimuli were now systematically presented to a single ear (competing monaural stimulation). In both cases a strategy of divided attention was imposed with respect to the words. A powerful REA was obtained in the second experiment, demonstrating that this phenomenon does not depend upon occlusion of the ipsilateral by the contralateral auditory pathways (Kimura 1961), but that competition within ears is sufficient. Secondly, the nature of the effect (facilitatory or interfering) from a co-present synonym or antonym of the target depends markedly upon how the ears are stimulated, in partial contrast to and extending the results of Lewis (1970).     

Personality correlates of career choice in the Kibbutz: A comparison between career and noncareer women

The study compared Kibbutz career women (who studied beyond high school and worked in their profession) to Kibbutz noncareer women (who did not study beyond high school and worked in various nonprofessional jobs such as the laundry, the kitchen, and child care) on several personality characteristics. All subjects were nonorthodox Jewish women who were born and raised in the Kibbutz. The two groups completed a variety of self-report inventories, including the Bem Sex-Role Orientation Inventory, need for achievement inventory, two self-esteem scales that measured both the global self-esteem and various dimensions of self-esteem (academic, social, physical appearance, physical abilities, and self-regard) and Cattell's Clinical Analysis Questionnaire (CAQ), which is a short version of Cattell's 16 Personality Factors Test. The results showed that Kibbutz career women differed significantly from noncareer women on several personality characteristics. These women attributed to themselves more instrumental characteristics, were found to be more independent and emotionally stable, and had a higher need for achievement and a higher academic and social self-esteem. In addition, the division of household work was more egalitarian in the case of career women. The results are discussed in view of the fact that all of the career women were actually holding traditionally feminine positions such as teachers and social workers.     

Infusion of protein synthesis inhibitors in the entorhinal cortex blocks consolidation but not reconsolidation of object recognition memory

Memory consolidation and reconsolidation require the induction of protein synthesis in some areas of the brain. Here, we show that infusion of the protein synthesis inhibitors anisomycin, emetine and cycloheximide in the entorhinal cortex immediately but not 180 min or 360 min after training in an object recognition learning task hinders long-term memory retention without affecting short-term memory or behavioral performance. Inhibition of protein synthesis in the entorhinal cortex after memory reactivation involving either a combination of familiar and novel objects or two familiar objects does not affect retention. Our data suggest that protein synthesis in the entorhinal cortex is necessary early after training for consolidation of object recognition memory. However, inhibition of protein synthesis in this cortical region after memory retrieval does not seem to affect the stability of the recognition trace.     

Traversing the Ineffable: Commentary on Sharon Farber’s “Becoming a Telepathic Tuning Fork”

In this commentary I attempt to refine our definition of telepathy, questioning whether phenomena such as projective identification, dissociative processes, unconscious affective communication, and implicit relational knowing warrant equal classification. Should projective processes be distinguished from “telepathic” transmissions? I propose a continuum of mutual receptivity along which sensory and non-sensory-based forms of human empathic responsiveness might be positioned. This continuum will extend all the way to telepathic communications that defy material-based, Newtonian models of mind, since they occur between patient and therapist while situated in separate geographical locations.