A Study of Twin Variant Selection and Twin Growth in Titanium

An in depth analysis on twin variant selection and twin growth character during compression by means of “interrupted in situ” EBSD orientation measurement was carried out. An experimental verification and geometrical analysis of the use of Schmid's law as a criterion for selecting twin variants was performed, and proved to be conclusive. Twin variants having Schmid factors higher than 0.4 have a good chance to be activated. The twin growth exhibits two modes: {11–22} twins show a tendency to multiple variants system (MVS) and {10–12} twins show predominant variant system (PVS). The Schmid factor plays an important role in MVS and PVS.     

The sound of darkness: Why do auditory cues aid infants' search for objects hidden by darkness but not by visible occluders?

In manual search tasks designed to assess infants' knowledge of the object concept, why does search for objects hidden by darkness precede search for objects hidden by visible occluders by several months? A graded representations account explains this décalage by proposing that the conflicting visual input from occluders directly competes with object representations, whereas darkness merely weakens representations. This study tests the prediction that representations of objects hidden by darkness are strong enough for infants to bind auditory cues to them and support search, whereas representations of objects hidden by occluders are not. Six-and-half-month-olds were presented with audible or silent objects that remained visible, became hidden by darkness, or became hidden by a visible occluder. Search required engaging in the same means-end action in all conditions. As predicted, auditory cues increased search when objects were hidden by darkness but not when they were hidden by a visible occluder. Results are discussed in the context of different facets of object concept development highlighted by graded representations perspectives and core knowledge perspectives and in relation to other work on multimodal object representations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The roles of respect for parental authority and parenting practices in parent-child conflict among African American, Latino, and European American families.

In this study, the authors examined whether parent-child conflict during the middle childhood years varied among families characterized as having different cultural traditions regarding issues of respect for parental authority and parenting practices. The sample included 133 African American, European American, and Latina girls (M age = 8.41 years) and their mothers. African American and Latina girls showed significantly more respect for parental authority than did European American girls. Furthermore, African American and Latina mothers reported significantly more intense arguments when respect was low than did European American mothers. Higher levels of discipline and better communication by mothers were both associated with reports of lower frequency of conflict; ethnicity did not moderate this association. Thus, respect for authority was most salient to group differences in conflict. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Forgetting rates in modality memory for young, mid-life, and older women.

Administered a mixed-modality (visual and auditory) continuous recognition task, followed immediately by a final recognition test, to 16 women in each of 3 age groups (18–23 yrs, 38–50 yrs, and 60–74 yrs). Ss gave recognition responses for both the words and their presentation modality. Although older Ss remembered less information about input mode than did the 2 younger groups, the age decrement was not the result of faster forgetting of such information by the elderly. When a ceiling effect at the initial lag was taken into account, forgetting rates for both words and input mode were comparable across the adult life span. (7 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Whatever happened to scholarly discourse? A reply to B. F. Skinner.

Comments that B. F. Skinner (see record 1988-00027-001) has presented an egregiously inaccurate characterization of humanistic psychology. The authors note that Skinnerian radical behaviorism emphasizes behavior, science, and technology, while humanistic psychologies emphasize human beings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Teenaged pregnancy and childbearing.

This article reviews recent evidence on the changing patterns of childbearing among adolescents and the impact of premature parenthood on the life course of young mothers and their children. Although adolescent mothers experience conspicuous disadvantages in educational attainment and economic well-being, over time the differences between early and later childbearing appear to diminish somewhat, at least for Blacks. The children of teenage mothers, however, are distinctly worse off throughout childhood than the offspring of older childbearers. The reasons for this disparity are explored. The concluding section discusses a range of preventive and ameliorative strategies for reducing the cost of early childbearing. The evidence supports the need for more integration among services and the importance of increasing the availability of services to those in need. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Jumping ship: Who benefits from an external labor market career strategy?

The authors evaluated a sample of 610 managers working in 20 Fortune 500 companies in a longitudinal study to test hypotheses about male and female managers' compensation associated with internal and external labor market strategies. Both managers' gender and their labor market experience were hypothesized to affect their total cash compensation. Data confirmed hypotheses, but analyses of differences between male and female managers showed that only the male managers benefited from an external labor market strategy. Female managers who used an external labor market strategy did not receive greater compensation than female managers who used an internal labor market strategy. The discussion focuses on why female managers do not receive the same benefit from an external labor market strategy as male managers. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Overt and covert coparenting processes in the family

This article introduces a new self-report instrument designed to measure the frequency of parental behaviors thought to promote or undermine children's sense of family. Members of 103 married couples rated their behavior in both public (all family members present) and private (alone with child) contexts. Factor analyses of these data revealed four distinct factors indexing: behaviors in the service of promoting a sense of Family Integrity, largely covert parent-to-child communications undermining, or conveying Disparagement of, the coparental partner; overt interparental Conflict in the presence of the child; and coparental disciplinary activities (Reprimand). Significant husband-wife correlations were found on each of the four individual subscales. Construct-specific intercorrelations also obtained between like scales on the new measure and on the Family Environment Scale and Quality of Coparenting Scale. Cluster analyses of husbands' and wives' scores on the four Coparenting Scale factors suggested five "types" of coparenting families: Disconnected, Supportive, Average, Distressed-Conflicted, and Passionate. These clusters, along with the value of self-report instruments in assessing coparenting behaviors that may be largely clandestine in nature, are discussed.     

Longitudinal prediction of child outcomes from differing measures of parenting in a low-income sample.

This study examined predictions from preschool parenting measures to middle childhood cognitive and socioemotional child outcomes to explore whether parenting assessment methodologies that require more time, training, and expense yield better predictions of child outcomes than less intensive methodologies. Mother-child dyads (N=278) in low-income African American families were assessed when the child was in preschool, using maternal report, the Home Observation for Measurement of the Environment-Short Form (P. Baker & F. Mott, 1989; R. Bradley & B. Caldwell, 1984), and structured observational measures of parenting. Child outcomes reported by children, mothers, teachers, and direct assessment were collected 4 years later. All parenting methodologies showed some predictive value; however, observational parenting measures showed the strongest and most consistent predictions of child outcomes. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Effectiveness of Early Head Start for 3-Year-Old Children and Their Parents: Lessons for Policy and Programs.

Early Head Start, a federal program begun in 1995 for low-income pregnant women and families with infants and toddlers, was evaluated through a randomized trial of 3,001 families in 17 programs. Interviews with primary caregivers, child assessments, and observations of parent-child interactions were completed when children were 3 years old. Caregivers were diverse in race-ethnicity, language, and other characteristics. Regression-adjusted impact analyses showed that 3-year-old program children performed better than did control children in cognitive and language development, displayed higher emotional engagement of the parent and sustained attention with play objects, and were lower in aggressive behavior. Compared with controls, Early Head Start parents were more emotionally supportive, provided more language and learning stimulation, read to their children more, and spanked less. The strongest and most numerous impacts were for programs that offered a mix of home-visiting and center-based services and that fully implemented the performance standards early. (PsycINFO Database Record (c) 2010 APA, all rights reserved)