Frequency-selective detection at three signal amplitudes

Using the probe-signal method, frequency-response characteristics were obtained for four Os detecting signals nominally of only 1000Hz under three signal-amplitude conditions: E/N_o=10.0, 12.6, and 15.8. Detection of 1000-Hz signals decreased systematically with signal-amplitude decreases, but signals at 850 Hz and at 1150 Hz were detected at or near the chance level during all signal-amplitude conditions. From the detection performance data, the detectability was inferred for four probe-signal frequencies relative to that of 1000-Hz signals for each of the amplitude conditions. From the curvesofrelative detectability, hal[-detectability bandwidths were estimated. Neither the relative detectability curves nor the half-detectability bandwidths indicate any systematic change in the frequencyselectivebehavior of the auditory O across the signal amplitudes used.     

PIGEONS ARE SENSITIVE TO THE SPATIAL ORGANIZATION OF COMPLEX VISUAL STIMULI

Abstract— Two experiments investigated the role of spatial organisation in the discrimination and generalization of complex visual stimuli by pigeons. In Experiment 1, after pigeons had been trained to discriminate line drawings of four objects, they were tested with novel pictures in which the same component parts of the objects were spatially rearranged. The spatially scrambled pictures led to a dramatic drop in recognition accuracy, hut responding remained above chance. In Experiment 2, pigeons reached a high level of discriminative performance when required to choose among four different spatial arrangements of the same object parts. These results confirm Cerella's (1980) conclusion that pigeons discriminate the component parts of complex visual stimuli, but. unless it is assumed that the scrambling deleted or created emergent features, the results disconfirm his conclusion that spatial organization plays no role in pigeons' picture perception.     

The collective past,group psychology and personal narrative: Shaping Jewish identity by memoirs of the Holocaust

Through honing its collective memory, especially after the Holocaust, the Jewish community has attempted to sustain its culture, bolster the Jewish identity of its members, and regain a resolute sense that its narrative is again proceeding. To some degree, all these aims are realized by instilling in its members the Jewish modal character structure: a psychological configuration with two contrastable entities. One chronically discomposed self-structure, defining itself as polluted and helpless, trembles with the appalling imagery of historical and imminent community disasters. The other entity believes in its unmatched capacity for reparative, socially beneficial actions. The paradigm of this psychological organization is found in many children of survivors. The memory of a tragic history abides alongside the community's hopes in the Jewish modal personality. The need to set forth and accommodate these two motifs imprints upon the Jewish "national" character many of its distinctive qualities. The designs of the Jewish community for this particularly Jewish twofold personality formation are augmented by the personal revelations of survivors. Therefore, Holocaustic testimonies are invested with a sacred aura. In measure, these recitals of the disaster with their stark images, plus the clashing affects aroused in the reader toward main characters of the narrative, dictate the way Jews define themselves in the world and the way they live. A confluence of being covertly commissioned by the Jewish community joins with the narrators' more idiosyncratic longings. Together they generate a steady stream of Holocaustic accounts. Complementary vectors drive the reader to peruse these records. The results therefrom, intimate knowledge of the disaster, plus the twofold personality motifs stamp many Jews as scions of the Holocaust.     

A review of patient outcomes in pharmacological studies from the psychiatric literature, 1966–1993

A literature search was conducted on studies of new drugs used with patients with schizophrenia reported by U.S. and non-U.S. researchers from 1966–1993, yielding 41 U.S., and a total of 24 other non-U.S. studies, among them 11 British studies. Results of the U.S. and non-U.S. studies were pooled separately and compared. Among several comparable conditions discussed, the lack of any data on suicides in the U.S. studies was observed. For a second statistical analysis of suicide rates ‘person-years’ were calculated to adjust for differing washout durations. The results obtained include findings that the percentage of patients relapsing in U.S. studies was slightly lower (37.9%) than in non-U.S. studies (46%); the percentage of patients dropping out in U.S. studies (10.5%) was higher than in non-U.S. studies (7.6%); known location of dropout patients in U.S. studies was 1.7%, compared to 2.6% in non-U.S. studies. The most interesting finding was that no suicides were reported in U.S. studies, compared to 0.6% of patients reported in British studies. Some U.S. studies used ‘challenge doses’, such as amphetamines or L-dopa; no non-U.S. studies reported their use. Compared to U.S. studies, those by non-U.S., and particularly British, researchers appeared to report adverse events in their studies. ‘Challenge’ drugs were not used; suicides were reported. It is estimated that the probability that no patients suicided who participated in the U.S. is small—one in 500.     

Tempo,Rhythm, and Aging in Golf

Older (n = 12) and younger (n = 12) golfers attempted to hit a golf ball into a target net a short distance away. An accelerometer attached to the back of the clubhead measured the applied force. In contrast to the more typical finding of slower perceptual-motor performance by older adults, older golfers reached their peak downswing force earlier in the shot and also exhibited a trend toward a faster overall speed or tempo of the shot. Additionally, older golfers exhibited greater changes in applied force and greater variability. A pattern of divergence among the force-time histories from multiple shots suggested that the overall person-plus-golf-club dynamics were unstable during a part of the shot. Older adults may be slower in controlling this instability. Half of the participants heard a tone whose pitch was proportional to their force. These participants had a slower follow through; however, they did not make significantly more or fewer shots than participants who had not been presented with the tone. Analyses of the temporal covariation among the backswing, downswing, and follow-through favored a chain-like temporal structure over a hierarchical, proportional structure. The pattern of covariation suggests that the tempo and rhythm of the shot are not independent and that changing one's tempo may disrupt rhythm.     

SUBLIMINAL EXPOSURE TO DEATH-RELATED STIMULI INCREASES DEFENSE OF THE CULTURAL WORLDVIEW

Abstract— Three experiments reported here provide empirical support for the hypothesis derived from terror management theory that unconscious concerns about death motivate allegiance to cultural beliefs, Study 1, contrasted exposure to a subliminal death-related stimulus, a standard mortality-salience treatment, and a neutral subliminal stimulus, and found that both the subliminal and the standard reminder of mortality led to more favorable evaluations of people who praised subjects' cultural worldview and more unfavorable evaluations of those who challenged it Study 2, replicated this finding by comparing the effects of exposure to subliminal death stimuli and subliminal pain stimuli. Study 3, contrasted subliminal death stimuli, supraliminal death stimuli, and subliminal pain stimuli and found that only subliminal death stimuli produced these effects.     

Nurses' Anxieties about Biohazards as a Function of Context and Knowledge1

Final-year nursing students (N= 96) described their anxieties about biohazards, not only in relation to the occupational context of a hospital ward, but also in relation to their general life context. These contexts were reported to vary in the extent to which they permitted control over exposure to the two particular biohazards chosen for study: human immunodeficiency virus (HIV) and hepatitis B virus (HBV). The data showed that nurses' anxiety about contracting HIV infection varied significantly across the two contexts, while anxiety about contracting HBV infection did not. In the general life context, anxiety about HIV was greater than anxiety about HBV for all subjects. This difference was significantly greater for those with incorrect knowledge about objective HIV seroconversion rates than for those with correct knowledge.     

An investigation of the effects of comorbid Axis II pathology on outcome of inpatient treatment for unipolar depression

DSM-based research on comorbidity has suggested thatdepression andpersonality disorder frequently occur together and that the combination of syndromes is associated with a poor response to treatment for depression. The present study was designed to explore the effect of comorbid Axis II pathology for a sample of 45 inpatients who received treatment for major depression. Both categorical and dimensional ratings of personality disorder were used in the statistical analysis. Positive categorical diagnosis of Cluster C (anxious-avoidant) disorder, as well as higher dimensional rating of Cluster A (odd-eccentric) pathology, was predictive of a poor response to treatment (p<.05), as measured by change in pre-post clinical ratings on the Montgomery-Asberg Depression Rating Scale. These results were construed as indicative of a significant Axis II comorbidity effect in the context of an inpatient, multimodal treatment setting for depression. The results also spotlight the influence of techniques of measurement in determining the outcome of statistical analysis.     

Political periodicals in policy formation

This is an ethnographic report on a conference entitled “The Politics of Publishing” which featured editors and writers from leading magazines and journals of political opinion. The aim of the conference was to articulate the intellectual ground on which each publication is predicated. A further goal of these observations was to seek out a common ground, a consensual series of assumptions, that permits such journals and their leading participants to flourish amidst conflict and opposing viewpoints. The article is less a study of the relationship of knowledge and policy, as such, as much as it is a study of the weaker forms of these terms, namely, information and ideology. These remarks are thus intended as a contribution to the elite impact on mass public opinion at one level, and the cornucopia of political ideas at a somewhat more abstract level. He also serves as Chairman of the Board of Transaction Publishers, located at Rutgers University, New Brunswick, NJ, USA 08903.