Illiteracy and brain damage. 2. Manifestations of unilateral neglect in testing "auditory comprehension" with iconographic materials

This report concerns the sentence-picture matching behavior of 100 neurologically healthy and 169 brain-damaged subjects, all of whom were unilingual adult right-handers. Within this population, 144 subjects were totally unschooled illiterates and the remaining 125 had received school education and thereafter had retained writing skills and reading habits. Brain-damaged subjects were tested less than 2 months after a first left- or right-hemisphere stroke. All subjects were administered an aphasia screening battery including, among other subtests, a set of six sentence-picture matching stimuli. For each of these six stimuli, subjects heard a sentence uttered by the examiner and were then requested to match this sentence with one of four drawings presented within a single display divided into four quadrants of equal surface. Three sentences were syntactically "simple" (noun subject + verb) and three were relatively more "complex" (noun subject + verb + one or two noun complements). Evidence of unilateral neglect was found in both left- and right-brain-damaged illiterates and literates. Moreover, the right neglect of left-brain-damaged subjects was manifest mostly when target sentences were relatively "complex" whereas the left neglect of right-brain-damaged subjects was manifest irrespective of the syntactic complexity of target sentences. Our data are interpreted as indicative of an interaction between two cognitive disorders resulting from dysfunctions of asymmetrically represented cognitive mechanisms. The implications of these findings with respect to clinical and research aphasia testing are discussed.     

Association between dyads and correct responses on the Paced Auditory Serial Addition Task (PASAT)

The sensitivity of the Paced Auditory Serial Addition Task (PASAT) to working memory deficits may be enhanced by examining "dyads" (i.e., correct responses immediately preceded by a correct response) as a complement to the traditional total correct summary score. In a sample of 397 mostly African American (79%) healthy adults, total dyad and total correct scores were highly correlated (r = .96, p < .001); however, the magnitude of this association diminished in faster stimulus presentation trials, particularly among participants with impaired working memory abilities.     

Adolescent alcohol use and suicide indicators among adolescents in Hawaii

Research on suicide has focused on gender, age, ethnicity, and psychiatric profiles. However, few studies have examined alcohol use and its relationship to suicide among Native Hawaiians and other Asian American/Pacific Islanders. This study analyzes data from the 1997 and 1999 Hawaii Youth Risk Behavior Survey to examine whether alcohol problems increase the risk for suicide indicators (as evidenced by responses to questions asking whether an individual has considered, planned, attempted, or required treatment for a suicide attempt). Drinking pattern was the best predictor for all suicide indicators. School and community-based programs can help to increase an adolescent's knowledge about the consequences of alcohol use and prevention of suicide.     

Effects of reinforcement rate and delay on the acquisition of lever pressing by rats.

The acquisition of lever pressing by naive rats, in the absence of shaping, was studied as a function of different rates and unsignaled delays of reinforcement. Groups of 3 rats were each exposed to tandem schedules that differed in either the first or the second component. First-component schedules were either continuous reinforcement or random-interval 15, 30, 60 or 120 s; second-component schedules were fixed-time 0, 1, 3, 6, 12, or 24 s. Rate of responding was low under continuous immediate reinforcement and higher under random-interval 15 s. Random interval 30-s and 60-s schedules produced lower rates that were similar to each other. Random-interval 120 s controlled the lowest rate in the immediate-reinforcement condition. Adding a constant 12-s delay to each of the first-component schedule parameters controlled lower response rates that did not vary systematically with reinforcement rate. The continuous and random-interval 60-s schedules of immediate reinforcement controlled higher global and first-component response rates than did the same schedules combined with longer delays, and first-component rates showed some graded effects of delay duration. In addition, the same schedules controlled higher second-component response rates in combination with a 1-s delay than in combination with longer delays. These results were related to those from previous studies on acquisition with delayed reinforcement as well as to those from similar reinforcement procedures used during steady-state responding.     

Protein-binding assays for adrenocorticoids

The measurement of the adrenocortical hormones, Cortisol and corticosterone, m blood plasma has previously best been done by procedures employing varying degrees of purification of the hormone, followed by photometric or fluorimetric quantitation. These methods have been relatively difficult or laborious, particularly in the case of the procedures that most specifically measure the hormoneof intent. These limitations are considerably overcome by new assays for Cortisol and corticosterone based on the principle of competitive protein-binding of the steroids in the presence of radioactively labeled steroid of the same molecular species. These methods are described and data on the specificity of such a method for corticosterone are presented and compared with one of the better fluorimetric assays.     

A visual object segmentation algorithm with spatial and temporal coherence inspired by the architecture of the visual cortex

Cognitive Processing - Scene analysis in video sequences is a complex task for a computer vision system. Several schemes have been addressed in this analysis, such as deep learning networks or...     

Systematic review of instruments measuring homophobia and related constructs

Since its conceptualization, the construct of homophobia has been the subject of many speculations about its specificity, reach, and possibility of empirical assessment. Several instruments have been created aiming to measure the prejudice against homosexuals. Peer‐reviewed articles of studies using measures to assess homophobia and related constructs were systematically reviewed in 4 databases (Medline, PsycINFO, ERIC, JSTOR). The articles were classified as they displayed evidence of the instrument's validity, reliability, or both. Finally, the instruments were rated according to that evidence. Out of 1076 results, 115 studies between 1993 and 2010 were identified as relevant. Those studies used 47 different instruments. This review focused in 5 instruments that concentrated the majority of the citations. Psychometric properties were acceptable.     

Homophobia or sexism? A systematic review of prejudice against nonheterosexual orientation in Brazil

Since it was coined in the 1970s, in the United States, the term “homophobia” has been invoked to define the prejudice against nonheterosexual orientation. Besides the US, the phenomenon has been detected in many contemporary societies, including Brazil. Prejudice against nonheterosexual orientation is strongly associated with the historical and social contexts in which it is embedded, which means that the term should not be used without a clear definition of its local specificities. This applies to the recent debate around homophobia in the Brazilian context. In an attempt to identify existing studies of prejudice against nonheterosexual orientations in Brazil, a systematic review was conducted in SciELO indexes, PubMed, PsycINFO, SCOPUS, and Web of Science. The articles were collected using the keyword “homophobia” and related terms, and “Brazil”, in the languages ??of the databases. The search returned 355 articles. Of these, 247 were removed because they were duplicates. The abstracts of 109 studies published between 1973 and 2011were analyzed. Thirty‐one articles were identified as relevant. The reviewed studies indicate that prejudice against nonheterosexual orientations is an evident and widespread phenomenon that is prevalent in various populations and contexts. Nevertheless, prejudice in Brazil is not homogeneous, and particular attention is necessary to the inequality of gender relations (sexism) and prejudice against gender nonconformity, which seem to explain, if not cause, most of the prejudice against nonheterosexual orientations. Although theoretically there is a clear distinction between sexual orientation and gender expression, from the standpoint of manifestation of prejudice that distinction seems to be more tenuous.     

Clarifying the importance of trust in organizations as a component of effective work relationships

Organizational trust is an important element of an organization's long‐term success, as it is a central component of effective work relationships. This study examines the extent to which one's trust in the organization mediates the relationship between three drivers of social exchange relationships and three attitudinal outcomes. The results from a sample of 1,300 manufacturing employees revealed that trust in the organization partially mediated the relationship between perceived supervisor support and turnover intentions, affective organizational commitment and job satisfaction, and fully mediated the relationship between distributive justice and information receiving and these outcomes. This paper extends the empirical literature about the antecedents and consequences of trust in organization, giving special attention to the mediating role of trust in organizations.