Differential impacts of age of acquisition on letter and semantic fluency in Alzheimer's disease patients and healthy older adults

The degree to which the typical age of acquisition (AoA) of words and word frequency have separable influences on verbal production tasks has been strongly debated. To examine the overlap between these factors in verbal fluency tasks, the performance of Alzheimer's disease (AD) patients (N = 34) and normal elderly controls (N = 36) was compared on semantic (e.g., vegetables) and letter (e.g., words that begin with F) fluency tasks. These comparisons revealed that words generated for the semantic fluency task had an earlier AoA while words generated for the letter fluency task had a higher word frequency. Differences in AoA between AD patients and controls were larger for semantic than letter fluency. These results suggest that AoA has an effect on verbal production that is independent of word frequency and that AoA has a semantic locus.     

Is head-on-trunk extension a proprioceptive mediator of postural control and sit-to-stand movement characteristics?

During stance, head extension increases postural sway, possibly due to interference with sensory feedback. The sit-to-stand movement is potentially destabilizing due to the development of momentum as the trunk flexes forward and the body transitions to a smaller base of support. It is unclear what role head orientation plays in the postural and movement characteristics of the sit-to-stand transition. The authors assessed how moving from sitting to standing with head-on-trunk extension compared with moving with the head neutral or flexed, or with moving with the head facing forward in space (which would involve head-on-trunk extension, but not head-in-space extension) in healthy, young participants. Head-on-trunk extension increased center of pressure variability, but decreased movement velocities, movement duration, and trunk flexion compared with flexed and neutral head-on-trunk orientations. Similarities in movement characteristics between head-on-trunk extension and the forward head-in-space orientation suggest that stabilizing the head in space does not fully counteract the postural and movement changes due to head-on-trunk extension. Findings suggest that proprioceptive feedback from the neck muscles contributes to the regulation of posture and movement, and therefore should not be overlooked in research on the role of sensory feedback in postural control.     

Numerosity and number signs in deaf Nicaraguan adults

What abilities are entailed in being numerate? Certainly, one is the ability to hold the exact quantity of a set in mind, even as it changes, and even after its members can no longer be perceived. Is counting language necessary to track and reproduce exact quantities? Previous work with speakers of languages that lack number words involved participants only from non-numerate cultures. Deaf Nicaraguan adults all live in a richly numerate culture, but vary in counting ability, allowing us to experimentally differentiate the contribution of these two factors. Thirty deaf and 10 hearing participants performed 11 one-to-one matching and counting tasks. Results suggest that immersion in a numerate culture is not enough to make one fully numerate. A memorized sequence of number symbols is required, though even an unconventional, iconic system is sufficient. Additionally, we find that within a numerate culture, the ability to track precise quantities can be acquired in adulthood.     

The Role of Gender in Young Children’s Selective Trust of Familiar STEM Characters

Female characters are less likely to engage with science, technology, engineering, and math (STEM) content than male characters on young children’s television shows. The current study examined how preschool-aged children’s selective trust of male and female characters to teach STEM differed by child gender, and how trust relates to children’s character identification. Forty-eight 3- to 6-year-old children’s selective trust of male and female characters to teach STEM content, gendered character identification, and personal interest in STEM activities was measured. Boys and girls had similar interest in STEM and had greater identification with same-gender characters. Although boys had significantly greater trust in male characters, girls had similar levels of trust in male and female characters. Overall, children had greater trust of male characters to teach STEM content, but this effect was driven by boys, indicating identification and selective trust are related, but not identical constructs. The discussion considers how representations of female and male characters on television may impact children’s trust of educational media characters to teach STEM.     

Motivation to Control Prejudice as a Mediator of Identity and Affirmative Action Attitudes1

Affirmative action is a divisive issue in society today. Attitudes toward affirmative action vary both between and within ethnic and racial groups, with Whites exhibiting the majority of negative attitudes. Researchers have suggested a variety of psychological explanations for differences in attitudes toward affirmative action (e.g., racism, self‐interest, fairness). The current study investigates whether motivation to control prejudice acts as a mediator of ethnic/racial identity and Whites’ attitudes toward affirmative action. Support was found for the mediating role of motivation to control prejudice for several aspects of ethnic and racial identity and affirmative action attitudes. Limitations of the study are discussed, as are topics for future research.     

What we see: inattention and the capture of attention by meaning

Attention is necessary for the conscious perception of any object. Objects not attended to are not seen. What is it that captures attention when we are engaged in some attention-absorbing task? Earlier research has shown that there are only a very few stimuli which have this power and therefore are reliably detected under these conditions (for example, Mack & Rock, 1998; Moray, 1959). The two most reliable are the observer's own name and a happy face icon which seem to capture attention by virtue of their meaning. Three experiments are described which explore whether these stimuli are detected under conditions, heretofore unexamined, which either cause inattentional blindness or are associated with a perceptual failure associated with the limits of attention. The evidence obtained indicates that these stimuli have a unique capacity to capture and extend the limits of attention under conditions in which this has been deemed highly unlikely.     

Role models in self-esteem of college women

This study examined the relationship between self-esteem and the existence of role models among a sample of 36 female college students. Participants completed a questionnaire which included demographic questions, the Self-esteem Inventory, and questions concerning use of childhood and contemporary role models. Independent t-test results indicated that participants who reported having current role models had higher self-esteem scores than participants who did not, suggesting that role models may contribute to higher self-esteem in college-age women. No significant differences in self-esteem were by sex of the role model.     

Fatal attraction: the effects of mortality salience on evaluations of charismatic, task-oriented, and relationship-oriented leaders

A study was conducted to assess the effects of mortality salience on evaluations of political candidates as a function of leadership style. On the basis of terror management theory and previous research, we hypothesized that people would show increased preference for a charismatic political candidate and decreased preference for a relationship-oriented political candidate in response to subtle reminders of death. Following a mortality-salience or control induction, 190 participants read campaign statements by charismatic, task-oriented, and relationship-oriented gubernatorial candidates; evaluated their preferences for each candidate; and voted for one of them. Results were in accord with predictions. The theoretical and practical implications of these findings are considered.     

Down to cases: the ethical value of "non-scientificity" in dyadic psychoanalysis

The efficacy of the dyadic psychoanalytic method cannot be verified empirically, due to the impossibility of counterfactuals, controls, or double-blind experiments, although inventive psychoanalytic researchers have established validation methodologies for analyzing groups of case studies, outcomes, and even theoretical precepts. The unavailability of complete empirical validation for the most basic method of the discipline of psychoanalysis, or of its fundamental "report of findings"--the case study--means that the field's scientific rationale must be supplemented with public reasoning of another sort. Fortunately, the very conditions of uncertainty that make it impossible to falsify the findings of dyadic psychoanalysis lend it its ethical force by compelling its participants to confront the basic human dilemmas of freedom, meaning, and judgment, the ethical horizon of human affairs. One substantial value of psychoanalysis, then, is its capacity for generating "ethical knowledge" of the sort adumbrated by Aristotle's conception of practical knowledge (phronesis). Case studies written for a lay audience to highlight these basic dilemmas can demonstrate that psychoanalysis produces crucial knowledge, specific to individuals, for living a healthy and satisfying life.