Dimensions of family connectedness among adolescents with Mexican, Chinese, and European backgrounds

Multiple dimensions of adolescents' connectedness with their families were investigated among 489 9th-grade students (M = 14.86 years) from families with Mexican, Chinese, and European backgrounds. Participants reported on various aspects of their family relationships and completed diary checklists of daily behaviors for a 2-week period. Adolescents from European backgrounds reported levels of family identification and dyadic closeness with parents similar to or greater than those reported by their peers. For adolescents from Mexican and Chinese backgrounds, particularly those from immigrant families, family connectedness included a stronger emphasis on family obligation and assistance. The extent to which family demographic variables, including parental level of education and residence in a single-parent family, accounted for group differences was examined.     

Analysis of factors that affect responding in a two-response chain in children with developmental disabilities

A sequence of behaviors consisting of appropriate responses, inappropriate responses, or a combination of both can be linked together in a behavior chain. Several operant processes may disrupt behavior chains. For example, one or more members of the behavior chain may be affected when reinforcement is withheld for the last response in the chain (extinction), when the last response is reinforced even if it occurs without the other responses in the chain (unchaining), or when access to the terminal reinforcer is available independent of responding (satiation). However, few studies have examined the effects of these types of procedures on responding that occurs in the context of behavior chains. The purpose of this study was to examine the effects of three clinically relevant procedures and processes (i.e., extinction, satiation, and unchaining) on behaviors that occur as part of a behavior chain. Overall, extinction and satiation resulted in a decrease in both responses in the chain. During the unchaining procedure, decreases were observed in the first response in the chain but not in the second response.     

Learning to minimize energy costs and maximize mechanical work in a bimanual coordination task

The authors addressed the hypothesis that economy in motor coordination is a learning phenomenon realized by both reduced energy cost for a given workload and more external work at the same prepractice metabolic and attentional energy expenditure. "Self-optimization" of movement parameters has been proposed to reflect learned motor adaptations that minimize energy costs. Twelve men aged 22.3 -/+ 3.9 years practiced a 90 degrees relative phase, upper limb, independent ergometer cycling task at 60 rpm, followed by a transfer test of unpracticed (45 and 75 rpm) and self-paced cadences. Performance in all conditions was initially unstable, inaccurate, and relatively high in both metabolic and attentional energy costs. With practice, coordinative stability increased, more work was performed for the same metabolic and attentional costs, and the same work was done at a reduced energy cost. Self-paced cycling was initially below the metabolically optimal, but following practice at 60 rpm was closer to optimal cadence. Given the many behavioral options of the motor system in meeting a variety of everyday movement task goals, optimal metabolic and attentional energy criteria may provide a solution to the problem of selecting the most adaptive coordination and control parameters.     

Improving student bus-riding behavior through a whole-school intervention

We describe a multicomponent intervention to improve bus-riding behavior of students attending an urban public school. The intervention was developed with technical assistance consultation that emphasized collaboration among students, school personnel, and bus drivers. The primary intervention procedures were identifying appropriate behaviors during transportation ("bus rules"), training bus drivers to deliver positive reinforcement, and rewarding student performance through a weekly school-based lottery. Disruptive bus behaviors, as measured by discipline referrals and suspensions, decreased with intervention relative to baseline phases in an ABAB reversal design. These positive results were maintained over the long term, with school personnel assuming responsibility for intervention in the absence of ongoing consultation.     

Size and reversal learning in the beagle dog as a measure of executive function and inhibitory control in aging

Several studies converge on the idea that executive processes age earlier than other cognitive processes. As part of a larger effort to investigate age-related changes in executive processes in the dog, inhibitory control was measured in young, middle-aged, old, and senior dogs using size discrimination learning and reversal procedures. Compared to young and middle-aged dogs, old and senior dogs were impaired on both the initial learning of the size task and the reversal of original reward contingencies. Impaired performance in the two aged groups was characterized as a delay in learning the correct stimulus-reward contingencies and, among the senior dogs in particular, an increase in perseverative responding. These separate patterns of reversal impairments in the old and senior dogs may reflect different rates of aging in subregions of the frontal cortex.     

How Women’s Nonconscious Association of Sex with Submission Relates to Their Subjective Sexual Arousability and Ability to Reach Orgasm

Common cultural stereotypes promote women’s submission to men, especially within intimate heterosexual relationships. Mirroring these stereotypes, women possess nonconscious associations between sex and submission (Sanchez, Kiefer & Ybarra, 2006). Moreover, women’s sex-submission associations predict greater reports of engagement in submissive sexual behavior (Sanchez et al., 2006). In the present research, we again found that women associate sex with submission at a nonconscious level. Study 1 showed that women’s nonconscious sex-submission associations predict reduced subjective arousability. Study 2 further demonstrated that these associations predict impaired ability to reach orgasm among women. These findings suggest that sex-submission associations may adversely affect women’s sexual functioning.     

Recollective experience in odor recognition: Influences of adult age and familiarity

We examined recollective experience in odor memory as a function of age, intention to learn, and familiarity. Young and older adults studied a set of familiar and unfamiliar odors with incidental or intentional encoding instructions. At recognition, participants indicated whether their response was based on explicit recollection (remembering), a feeling of familiarity (knowing), or guessing. The results indicated no age-related differences in the distribution of experiential responses for unfamiliar odors. By contrast, for familiar odors the young demonstrated more explicit recollection than the older adults, who produced more know and guess responses. Intention to learn was unrelated to recollective experience. In addition, the observed age differences in remember responses for familiar odors were eliminated when odor naming was statistically controlled. This suggests that age-related deficits in activating specific odor knowledge (i.e., odor names) play an important role for age differences in recollective experience of olfactory information.     

“Seeing the Difference”: An Interdisciplinary Approach to Death, Dying, Humanities, and Medicine

This essay explores how strategies integral to inquiry in the humanities provide insights into developing an interdisciplinary approach to studies of death and dying that will be relevant to medical practice as well as to humanistic study. The author asks how we can produce new modes of knowledge in an area where "knowing" is highly problematized and argues that while a putative field of death and dying studies must include a range of disciplinary approaches it must also account for lived, subjective experience and the ways that we, as individuals and as a culture, create meaning.     

The recovery of thematic role structure during noun-noun interpretation

We examined how people use their knowledge of events to recover thematic role structure during the interpretation of noun-noun phrases. All phrases included one noun that was a good-agent/poor-patient (prosecutor) in a particular event (accuse), and the other noun was a good-patient/poor-agent (defendant) for the same event. If people interpret the noun-noun phrases by inverting the nouns and applying a thematic relation (see Downing, 1977; Levi, 1978), phrases should be interpreted more easily when the head nouns typically are good agents and the modifiers are good patients for specific events. Two experiments supported these predictions. Furthermore, the results indicated that in the less preferred thematic order (agent-patient), people often generated interpretations in which the modifiers became the focus of the interpretations. This finding suggests that violating thematic role preferences is one constraint on when the inversion process occurs during noun-noun interpretation.     

Predictors and correlates of coping well with early motherhood in the Australian Longitudinal Study on Women's Health

Women who become mothers at an early age are characterised by socio-economic disadvantage and unhealthy lifestyles; however, some cope extremely well. This paper describes Australian women who become mothers at an early age, in order to identify factors that predict coping. The younger cohort of the Australian Longitudinal Study of Women's Health was used to identify 1064 young women who became mothers between Survey 1 and Survey 2. These women were categorised on the basis of the Mental Health Index of the SF-36 as having High, Normal or Low mental health. Survey 1 data were used to examine predictors, and Survey 2 data to examine correlates, of mental health. Surprisingly, few socio-demographic or health-related variables predict level of coping with early motherhood. Women who would have High mental health as mothers were likely to be in paid work, had few symptoms, and had low levels of stress. They were least likely to have a history of miscarriage and most likely to use contraception. There were no significant effects for other socio-demographic factors, or health-related behaviours. In the longer term, however, all young mothers may suffer an increasing level of disadvantage and distress relative to their peers.