Inertial eigenvalues, rod density, and rod diameter in length perception by dynamic touch

Four experiments addressed the relevance of the eigenvaluesI _k of the inertia tensor for perceiving length by dynamic touch. Experiments 1–2 focused on the consequences of limiting variation in the minimum eigenvalueI ₃. Both revealed that perceived length is a function ofI _k . Whether the contribution ofI ₃ is detected, however, depends on the range of values that characterize a particular object set. Experiments 3–4 considered the relationship between an independent index of a rod’s diameter, which does not affectI _k , and actual manipulation of a rod’s diameter, which does affectI _k . Whereas the former appeared as satisfaction of implicit instructions to alter reports of perceived length, the latter entailed actual differences in perceived length in accordance withI _k . Results are discussed with respect to the links among actual length, perceived length, andI _k , as well as, in particular, how these links guarantee that perceived length is in the range of actual lengths.     

The myth of macho dominance in decision making within Mexican and Chicano families

The myth concerning Hispanic family life which prevails in the social science literature can best be summarized by abbreviated quotations attributed to Alvirez and Bean. The Mexican or Chicano husband is a macho autocrat who rules as "absolute head of the family with full authority over the wife and children" where "all major decisions are his responsibility." Domination by husbands in marriage is logically consistent with their wives' submissivesness accompanied by passive acceptance of the future, strong religious beliefs, and a tendency to reside in the temporal present. The myth is also deeply imbedded in the social pathology model: differences between Hispanics and Anglos are assumed to reflect negatively on Hispanics. The myth, it should be noted, is seldom subjected to the scrutiny of empirical inquiry. The review of 4 studies on both Mexican and Chicano samples fails to support the notion of male dominance in marital desision making. Refutation of the hypothesis of masculine dominance in marital decision making calls other components of the myth into question. Research among Hispanics on alledged female submissiveness, fatalism, eligiosity, and temporal perspective are called for. More sophisicated designs involving experimental manipulations are needed. Experimental studies on the process of decision making, actual behaviors involved in economic or budgetary negotiations, and parental interaction around childrearing would also be of interest. While the data reviewed may suggest that Hispanic males may behave differently from nonHispanic males in their family and marital lives, the behavior is not in the inappropriate fashion suggested by the myth with its strong connotations of social deviance. Additional research is recommended among Hispanics on sex role behavior among both men and women, with special emphasis on how it influences family life and marriage.     

REMOVING VEILS OF IGNORANCE1

For more than two millennia the development of philosophy in what is called the West has been the province of men who trace their intellectual heritage to (some) men in ancient Greece. Within “the development of philosophy” I include the training of philosophers as well as publishing and preserving philosophical work in libraries. Thus I regard philosophy as a very material as well as spiritual enterprise. My focus here is on the spiritual impact, actual and potential, of recent changes in the material base of philosophy and the material impact of recent changes in the spiritual focus of philosophers. Before the Twentieth Century, the most significant transitions in the development of Western philosophy were its coming under the domination of Christian religious institutions and then its becoming relatively freed from such domination. Since the advent of the Twentieth Century, the most significant transitions may come from the increasing access to academic institutions of the middle and working classes, of people of color with histories of oppression by white societies, and of women from all classes and ethnic backgrounds—people who do not always or only trace their intellectual heritages to men of ancient Greece. What differences might these changes make to, and call for in, the development of philosophy? What I have thought about most are differences made by women and differences that have drawn in women to academic philosophy in Western democracies, such as the United States. Twentieth Century women in these contexts have published substantial bodies of philosophical inquiry with feminist agendas (both philosophy of feminism and philosophy manifesting feminist perspectives in ethics, epistemology, etc.). I want to comment on two features of such inquiry that often make it attractive to women less readily engaged by the traditions defined by privileged men. These features are holism and what I call “historical particularism.” I begin with “particularism.”     

Comparing the effects of static and dynamic signals during multiple schedules

The extent to which multiple schedules are an effective schedule thinning method following functional communication training (FCT) relies on the control the schedule-correlated stimuli exert over behavior. Thus, the stimuli used to signal the schedule in place (e.g., reinforcement and extinction) in a multiple schedule arrangement require special attention. To date, the majority of the research on multiple schedules has evaluated the use of different arbitrary signals as schedule-correlated stimuli (e.g., poster boards). These signals are considered static as they lack movement. More recently, some studies have successfully used dynamic signals, which include movement or animation, within multiple schedule arrangements. However, the extent to which one type of signal may result in faster stimulus control over behavior has not been evaluated. Thus, the purpose of this study was to compare the use of static and dynamic signals as schedule-correlated stimuli in multiple schedules used within the context of FCT. Four children diagnosed with autism spectrum disorder participated in the study. The results suggest that no differences in discriminated manding were observed for three out of four participants. Only dynamic signals resulted in discriminated manding for one participant.     

Sentence comprehension and production in children with cochlear implants: Errorless procedures and equivalence-based instruction

Research supports equivalence-based instruction (EBI) and matrix training for increased listening and speaking skills in children with cochlear implants (CI). We incorporated errorless procedures to optimize the EBI and evaluated the effects on the auditory comprehension and verbal responding at-sentences level in six CI children who were readers and showed inaccurate tacting. Subject-verb-object sentences were arranged in two matrices; diagonal combinations were trained and evaluated non-diagonal combinations. EBI included stimulus fading and exclusion to directly teach the dictated sentence-picture matching; written-sentences construction upon dictation also was taught. Probes assessed the derived stimulus-stimulus and stimulus-response relations. All participants learned the auditory-visual discriminations and the exclusion resulted in fewer errors than on a stimulus fading procedure. Five participants formed equivalence classes and increased verbal responding to equivalent stimuli, especially pictures tacting. They also showed recombinative generalization for both matrices. Professionals can incorporate errorless procedures to EBI for improving sentence comprehension, tacting, and productivity in CI children.     

Fathers' caregiving in low-income African–American and Hispanic–American families

The present study assessed fathers' and mothers' relative involvement in infant caregiving tasks in 34 low-income African–American and Hispanic–American families. Analysis showed that involvement in childcare differed as a function of the gender of the parent. Fathers spent one half the time mothers did in caregiving. However, fathers' and mothers' participation in caregiving did not vary as a function of ethnic group. African–American parents reported to have received more family support than Hispanic–American parents. Although relationships were noted between age, income, education, length of marriage, social support, and involvement in infant caregiving, these sociodemographic variables did not predict parents' participation in childcare. The results are discussed in relation to the preconceived notion that low-income, minority fathers are ‘uninvolved’. ©1997 John Wiley & Sons, Ltd.     

Women, Evil, and Grey Zones

Gray zones, which develop wherever oppression is severe and lasting, are inhabited by victims of evil who become complicit in perpetrating on others the evils that threaten to engulf themselves. Women, who have inhabited many gray zones, present challenges for feminist theorists, who have long struggled with how resistance is possible under coercive institutions. Building on Primo Levi's reflections on the gray zone in Nazi death camps and ghettos, this essay argues that resistance is sometimes possible, although outsiders are rarely, if ever, in a position to judge when. It also raises questions about the adequacy of ordinary moral concepts to mark the distinctions that would be helpful for thinking about how to respond in a gray zone.     

The longitudinal associations between personal belief in a just world and teacher justice among advantaged and disadvantaged school students

The Just World Hypothesis states that people need to believe in a just world in which they get what they deserve and deserve what they get. This study examines the longitudinal associations between personal belief in a just world (BJW), the belief that events in one's own life are just and teacher justice in different status groups. It is posited that the more individuals believe in a personal just world, the more they feel they are treated justly by others, and this should be particularly true for students with a low-status background. Longitudinal questionnaire data were obtained from students with German and Turkish/Muslim backgrounds over a period of 3–4 months. The pattern of results revealed that personal BJW was important for the Turkish/Muslim students in evaluating teachers as more just over a given period of time, but not for the German students. That is, the buffering effect of personal BJW was crucial for the disadvantaged students.