Semantic mechanisms in paralexia

This study explores the effects of semantic constraints on the occurrence of paralexic responses in two patients who tend to produce semantic errors in reading aloud. In the first experiment, semantic constraints were provided by using words as proper names (e.g., “brown” vs. “Sam Brown”), and in the second by using short, highly familiar phrases to restrict the meaning of the target word (e.g., the polar bear; green with envy). These constraints were found to be effective in reducing the frequency of paralexic errors.     

The word order problem in agrammatism : II. Production

This study demonstrates that agrammatic aphasics have difficulty describing relations that are signified by the order of noun phrases around verbs or prepositions. The word order deficit is found in a Sentence Order Task, in which written words must be arranged linearly to form a sentence, as well as in oral production. Ordering tendencies reflect factors like animacy or potency, rather than the systematic use of syntactic rules. These results point to a fundamental syntactic disorder in agrammatism.     

Prejudice Toward Immigrants1

In the present study, 4 variables (realistic threats, symbolic threats, intergroup anxiety, and negative stereotypes) were used to predict prejudice toward immigrants from Cuba, Mexico, and Asia in samples of students from states in the United States that are affected by immigration from these areas (Florida, New Mexico, and Hawaii, respectively). All 4 variables were significant (or marginally significant) predictors of attitudes toward these immigrant groups. Evidence is presented that the predictor variables are conceptually and empirically distinct. However, these variables do appear to be tied together by an underlying theme: They all concern threats to the in-group or its members. Some of the implications of the results for intergroup relations are discussed.     

Cross-national stereotypes of locus of control in university students1

Stereotypes of locus of control were studied in male and female university students from eight countries (Canada, France, West Germany, India, Israel, Italy, Japan, United States). The subjects took the Rotter Internal-External Locus of Control (I-E) Scale in standard fashion (“own” scores) and then in the role of students similar to themselves in their own country (attributed own) and in selected other countries (attributed other). Using the difference between “own” scores and “attributed” scores as the operational measure of stereotype, the results indicate (1) that scores attributed to students in a given country bear little relationship to those students “own” scores, thereby suggesting the presence of stereotypes of locus of control; (2) students in most countries attribute greater externality to the average student in their own country compared to themselves; (3) countries vary in the degree to which they stereotype other countries with the U.S. students significantly attributing greater externality to other countries and Japanese students significantly attributing greater internality to other students; (4) countries vary in the degree to which they are stereotyped with German students perceived as most internal and Italian students as most external; (5) the U.S.S.R. and U.S.A. are perceived differently on content subscales of the I-E Scale although their overall attributed scores do not differ.     

The effects of realistic threat and group identification on social dominance orientation

Based on social identity and intergroup threat theories, we argue that social dominance orientation (SDO) can increase as a result of realistic threat, or perceived obstacles to the ingroup’s position and general welfare. However, this effect should be strongest among highly-identified group members, who are particularly concerned with protecting their ingroup against threat. Study 1 found that among non-Asian Americans, racial group identification moderated the relationship between perceptions of realistic threat from Asian Americans and SDO. Study 2 replicated Study 1 using an experimental, rather than correlational, design. Using different social groups, Study 3 showed that non-science college majors who identified strongly with their field of study exhibited higher SDO after being made to feel threatened by science majors. The results from these studies have implications for research on the meaning and antecedents of SDO.     

Effects of social stress on tumor development in dominant male mice with diverse behavioral activity profiles

We examined the influence of individual psychological profile and social behavior on tumor development in dominant male mice. Male OF1 mice were subjected to an open field test (OFT) to observe their motor activity and latency. Subsequently, the animals were divided into three groups: Stress-Non-Inoculated (SNI), Stress-Inoculated (SI) and Control-Inoculated (CI). The SI and CI groups were inoculated with tumor cells and the SNI group with vehicle. SNI and SI were exposed to social stress with an anosmic intruder six (T1) and twenty one (T2) days after inoculation and their behavior was analyzed. After T2, subjects were put down and the pulmonary metastatic foci counted. SI developed greater pulmonary metastasis than CI, indicating an effect of stress despite the animal's dominant status. Active animals developed less pulmonary metastasis than their passive counterparts. No differences were found in social behavior at T1. Differences were found, however, in some behavioral categories at T2 between SI and SNI, and between active and passive animals. These differences indicate an effect of tumor development on social behavior that is more evident in passive subjects.     

OSP parameters and the cognitive component of reaction time to a missing stimulus: Linking brain and behavior

This within-subjects experiment tested the relationship between the premotor (cognitive) component of reaction time (RT) to a missing stimulus and parameters of the omitted stimulus potential (OSP) brain wave. Healthy young men (N = 28) completed trials with an auditory stimulus that recurred at 2 s intervals and ceased unpredictably. Premotor RT and Motor RT were measured on active trials that required an immediate response to a missing stimulus. Passive trials required no response in order to measure the complete set of OSP parameters (i.e., onset, rate of rise, amplitude and peak latency). The results showed that faster Premotor RT was strongly associated with a faster rate of rise in the OSP wave. Motor RT was unrelated the OSP parameters. This new evidence is consistent with the occurrence of some common cognitive processes generating behavioral and brain reactions to a missing stimulus.     

Unmitigated communion and health among adolescents with and without diabetes: the mediating role of eating disturbances

The authors examined the implications of unmitigated communion--a focus on others to the exclusion of the self--for psychological and physical health among adolescents with (n = 132) and without (n = 131) diabetes times/during a 1-year period. Unmitigated communion predicted greater psychological distress and lower levels of competence cross-sectionally and longitudinally, controlling for sex, pubertal status, and communion. Health status moderated some longitudinal relations, such that relations held only for adolescents with diabetes. In addition, unmitigated communion was associated with poor metabolic control and predicted a deterioration in metabolic control over the year for adolescents with diabetes. Unmitigated communion also was associated with disturbed eating behavior cross-sectionally and longitudinally, and disturbed eating behavior explained some of the relations of unmitigated communion to psychological but not physical health outcomes.     

Young and Old Adults' Concerns About Morality and Competence

Two experiments were conducted to examine people's sensitivity to person information from the morality domain (relation-oriented) and the competence domain (task & achievement-oriented). In a lexical decision paradigm, the findings from Experiment 1 showed that younger adults were faster to identify person cues (trait words) from the morality than from the competence domain, especially cues that were related to immorality. Experiment 2 compared the responses of younger and older adults. Despite the slower responses of the older adults, the findings indicated that all participants were faster at identifying cues from the morality domain than from the competence domain, with no age interactions. The results from Experiment 2 also suggested that disparate findings in the literature regarding reaction times to morality/competence cues and valence (positive or negative) were a function of word frequency effects. The findings are discussed in terms of people's chronic concern with the moral aspects of others as invariant across the lifespan, given that the morality domain is where interpersonal costs and threats are most likely to be signaled.