Parenting Attitudes and the Self-Esteem of Young Children

Second-, third-, fifth-, and sixth-grade children evaluated relationship qualities of a self-nominated friend and a self-nominated very best friend over a 6-month school year period. Results demonstrated that 76% of the friend relationships and 50% of the very best friend relationships were maintained over the course of the study. Children in maintained friendships evaluated their relationships more positively and also reported having larger friendship networks in general compared with children whose friendships did not endure over time. Thus those with unstable relationships are having difficulty initiating new friendships as well. For very best friends, positive relationship qualities (e.g., caring) did not change over time for children in maintained relationships, while positive relationship qualities decreased over time for children in nonmaintained relationships. Further, no differences emerged between children in maintained and nonmaintained very best friendships on perceptions of negative relationship qualities (e.g., conflict).     

Energetic Cost and Stability during Human Walking at the Preferred Stride Frequency

The possibility that preferred modes of locomotion emerge from dynamical and optimality constraints and the energetic and dynamical constraints on preferred and predicted walking frequency are explored in this article. Participants were required to walk on a treadmill at their preferred frequency, at a frequency predicted as the resonance of a hybrid pendulum-spring model of the legs, and at frequencies ±15%, ±25%, ±35% of the predicted frequency. Walking at the preferred and predicted frequencies resulted in minimal metabolic costs and maximal stability of the head and joint actions. Mechanical energy conservation was constant across conditions. The head was more stable than the joints. The joints appeared to be in service of the head in maintaining a stable trajectory. The major findings of this study suggest a complementary relationship between energetic (physiological) and stability constraints in the adoption of a preferred frequency of walking. Multiple subsystems may be involved in constraining observed macroscopic behavior in intact biological systems. The approach and results of the study imply that a useful tack in understanding how dynamical control structures arise is to study the potential criteria that serve to act as constraints on skilled movement patterns in unimpaired and impaired populations.     

The dimensional structure of people's fears,threats, and concerns and their relationship with right‐wing authoritarianism and social dominance orientation

Most theories addressing the topic have proposed that threat and fear underlie right‐wing authoritarianism (RWA), and many empirical findings have been consistent with this proposition. Important questions, however, remain unanswered, such as whether RWA is associated with fear and threat in general or only specific kinds of fear and threat. Theories of RWA generate markedly different predictions on this issue, particularly with respect to social or personal fears, and whether the association would also hold for the closely related construct of social dominance orientation (SDO). We investigated the issue by asking 463 undergraduate students to rate their feelings of fear, concern, and anxiety to a comprehensive 93‐item list of potential fears and threats, which were formulated as either personal or social. Exploratory factors analysis identified five distinct fear–threat factors: Harm to Self, Child, or Country; Personal and Relationship Failures; Environmental and Economic Fears; Political and Personal Uncertainties; and Threats to Ingroup. All the fear–threat factors were correlated with RWA, with the strongest correlations being for Threats to Ingroup, and with stronger effects for social than for personal fears. None of the fear factors correlated with SDO. These relationships were not affected by controlling for Social Desirability or Emotional Stability (EMS). When the intercorrelations between fear factors and EMS were controlled using ridge regression, only Threats to Ingroup predicted RWA. Structural equation modeling indicated good fit for a model in which low levels of EMS had a significant path to Threats to Ingroup, which in turn had a significant path to RWA, and EMS having a significant though weak indirect (fully mediated) inverse effect on RWA. Implications of these findings for theories of authoritarianism and future research are discussed.     

Relationships among Negative Emotionality,Responsive Parenting and Early Socio‐cognitive Development in Korean Children

The present study examined the interplay among negative emotionality, responsive parenting and socio‐cognitive developmental outcomes (i.e., communication, personal‐social and problem‐solving outcomes) in about 1620 Korean children using three waves of longitudinal data spanning the first 2 years of their life. Results from the Structural Equation Modeling (SEM) demonstrated that there were moderate to low degrees of stability in negative emotionality, responsive parenting and socio‐cognitive developmental outcomes from infancy to toddlerhood. Evidence for reciprocity in the parent–child relationship was found; responsive parenting predicted higher levels of subsequent child communication (in infancy and toddlerhood), and infants' higher problem‐solving ability predicted higher responsive parenting in toddlerhood. Overall, the cross‐age associations among the variables were similar between boys and girls, but some different patterns were observed: when controlling for family contextual factors and the within‐time correlations, negative emotionality at an earlier point significantly predicted lower responsive parenting at a later point and vice versa only in girls during infancy, but neither in boys nor in toddlerhood. The implications of these findings are discussed. Copyright © 2016 John Wiley & Sons, Ltd.     

Do historic threats to the group diminish identity fusion and its correlates?

We examined the reactions of Spanish participants to three negative historic events: a corruption scandal involving the Royal Family and two separatist efforts by a prosperous region of Spain. Although average fusion scores declined following these events, these declines were limited to sentiments toward the group category – collective ties-; they did not tarnish sentiments toward individual group members – relational ties. Moreover, strongly fused persons continued committed to remain in the group and act agentically by fighting and dying for it. Finally, rank orderings of fusion scores remained stable. These findings demonstrate that negative events weaken some aspects of alignment with the group, including collective ties and fusion, but not other aspects, such as relational ties and endorsement of pro-group behaviors.     

Critical factors governing the thermal stability of austenite in an ultra-fined grained Medium-Mn steel

The time-evolution of retained austenite at 650 °C is shown to be a fair indicator of the factors governing the austenite stability. The grain size contribution to austenite stability is evidenced and a martensite start temperature (M_s) law applicable to medium-Mn steels and including both the chemical and size effects is determined.     

Local dynamic stability of the spine and its coordinated lower joints during repetitive Lifting: Effects of fatigue and chronic low back pain

The nonlinear Lyapunov exponent (LyE) has been proven effective for evaluating the local stability of human movement and exploring the effects of load, speed and direction of individuals with and without nonspecific chronic low back pain (CLBP). The purpose of this study was to examine spinal and lower joint stability and response to fatigue of individuals with and without CLBP while performing lifting-lowering movements. Fourteen healthy individuals and 14 patients with nonspecific CLBP were recruited to perform lifting movement repeatedly while holding two equally-sized dumbbells in their hands. The participants continued lifting until they reported their highest level of fatigue. Kinematic data for the spine and its coordinated lower joints were recorded during the task (more than 40 lifting cycles on average). The first and last 20 cycles of each cyclic time series were defined as early- and late-fatigue conditions, respectively. The maximum LyE was estimated to quantify the local dynamic stability of the angular displacement time series of the spine, hip, knee and ankle on different anatomical planes in both the early- and late-fatigue conditions. The results revealed that local stability of the spine and hip was affected by fatigue. Spinal stability decreased as fatigue increased on the sagittal plane (p < 0.05). The hip exhibited a similar affectation (destabilization under fatigue) on all anatomical planes. Patients with CLBP showed more stable hip movement on the frontal and transverse planes (p < 0.05). These results suggested that lifting/progressive fatigue could increase the risk of injury to the spine and hip. These findings indicate that patients with CLBP applied different control strategies for the hip; thus, spinal control stability should be evaluated together with the stability of the lower joints.     

Context specificity in stability of hyperactivity-impulsivity

This paper exemplifies a secondary data analysis of context-specific differences in children's hyperactivity-impulsivity while controlling for informant-specific effects. Participants were boys and girls from the NICHD Study of Early Child Care and Youth Development who were measured in 1(st), 3(rd), and 5(th) grades. Latent factor models were structured using multi-informant reports including mothers, fathers, teachers, and observers. Temporal stability within a context was stronger than cross-context consistency, and the magnitude of longitudinal stability was higher in the home context compared to the school context. Controlling for informant-specific effects resulted in a significantly improved model fit and increased within-context stability. Our findings highlight the importance of considering both context and informant effects when studying longitudinal stability and change in personality development.     

What Do We Know About Gay and Lesbian Couples?

Abstract— Research on gay and lesbian couples is highlighted with regard to household labor, conflict, satisfaction, perceived social support, stability, and the variables that predict relationship quality. Relative to partners from married heterosexual couples, partners from gay and lesbian couples tend to assign household labor more fairly, resolve conflict more constructively, experience similar levels of satisfaction, and perceive less support from family members but more support from friends. The limited data available indicate that gay and lesbian couples may be less stable than married heterosexual couples. The factors that predict relationship quality tend to be the same for gay, lesbian, and heterosexual married couples. Overall, research paints a positive picture of gay and lesbian couples and indicates that they tend to be more similar to than different from heterosexual couples.     

Connection and Influence: A Process Theory of Causation

Summary  A combination of process and counterfactual theories of causation is proposed with the aim of preserving the strengths of each of the approaches while avoiding their shortcomings. The basis for the combination, or hybrid, view is the need, common to both accounts, of imposing a stability requirement on the causal relation.