Response to Karen Lebacqz and Stephen Palmquist

I respond here to the essays by Karen Lebacqz and Stephen Palmquist, beginning with my debt of gratitude to Lebacqz for her understanding of the methodological depth I try to bring to the analysis of bioethical issues. I further illustrate that observation here by reviewing the logic of my approach to the issue of wrongful life. At the same time, in connection with human genetic enhancement, I acknowledge that I may have not properly appreciated the seriousness of the problem of sin. To Palmquist's assertion that my criticisms of Kant's treatments of grace miss the way Kant has confined himself to being a philosophical (as opposed to biblical) theologian, I argue that Kant's problem lies instead in his poor application of his own compelling insights about the depths of human sinning. I close with an appreciation of Palmquist's observation of some important points of contact between Kant's understanding of sin and that of Kierkegaard.     

Quadriceps-hamstrings intermuscular coherence during single-leg squatting 3–12 years following a youth sport-related knee injury

The purpose of this study was to determine the degree of co-contraction as per electromyographic gamma-band intermuscular coherence of the quadricep (Q) and hamstring (H) muscles during single-leg squatting (SLS), and to assess the influence of sex and self-reported knee complaints on the association between knee injury history and medial and lateral Q-H intermuscular coherence.Participants included 34 individuals who suffered a youth sport-related intra-articular knee injury 3–12 years previously, and 37 individuals with no knee injury history. Surface electromyographic signals were recorded from medial and lateral thigh muscles bilaterally to determine the gamma-band (30–60 Hz) intermuscular coherence between medial and lateral Q-H muscle pairs during SLS. Multivariable linear regression (α = 0.05) was performed to investigate the relationship between knee injury history (main exposure) and medial and lateral Q-H coherence (outcome) while accounting for the influence of sex and self-reported knee pain and symptoms (covariates).The median age of participants was 25 (range 18–30) and 67% were female. Q-H gamma-band coherence was present for 60–90% of legs. Medial and lateral Q-H coherence was higher in females compared to males. There was no evidence for an association between medial Q-H coherence, knee injury history, knee pain, or symptoms. There was evidence for an association between knee injury history and lateral Q-H coherence, which was modified by sex such that previously injured males demonstrated reduced Q-H coherence compared to uninjured males.These finding suggest that females demonstrate a more pronounced Q-H co-contraction strategy during a SLS than males regardless of knee injury history. Further, that male who suffered a youth sport-related knee injury 3–12 years previously demonstrate less Q-H co-contraction during a SLS than uninjured males. The mechanisms behind differences in neuromuscular control between males and females as well as previously injured and uninjured males require further investigation.     

Mathematics ability and related skills in preschoolers born very preterm

Children born very preterm (VPT) are at risk for academic, behavioral, and/or emotional problems. Mathematics is a particular weakness and better understanding of the relationship between preterm birth and early mathematics ability is needed, particularly as early as possible to aid in early intervention. Preschoolers born VPT (n = 58) and those born full term (FT; n = 29) were administered a large battery of measures within 6 months of beginning kindergarten. A multiple-mediation model was utilized to characterize the difference in skills underlying mathematics ability between groups. Children born VPT performed significantly worse than FT-born children on a measure of mathematics ability as well as full-scale IQ, verbal skills, visual–motor integration, phonological awareness, phonological working memory, motor skills, and executive functioning. Mathematics was significantly correlated with verbal skills, visual–motor integration, phonological processing, and motor skills across both groups. When entered into the mediation model, verbal skills, visual–motor integration, and phonological awareness were significant mediators of the group differences. This analysis provides insights into the pre-academic skills that are weak in preschoolers born VPT and their relationship to mathematics. It is important to identify children who will have difficulties as early as possible, particularly for VPT children who are at higher risk for academic difficulties. Therefore, this model may be used in evaluating VPT children for emerging difficulties as well as an indicator that if other weaknesses are found, an assessment of mathematics should be conducted.     

Preterm birth enhances the contribution of mothers’ mind-mindedness to infants’ expressive language development: A longitudinal investigation

Maternal mind-mindedness has been shown to be a powerful predictor of many developmental outcomes and to buffer the impact of psychosocial risk conditions, but no study has investigated whether this parental feature might support child development in the presence of biological risk, such as preterm birth. The present study addresses this gap, by investigating whether early maternal mind-mindedness contributes to the growth of a child’s linguistic abilities in the following two years of life, and if the contribution of this maternal feature might be stronger in the presence of preterm birth. Forty mother–child dyads (twenty with a preterm infant) were followed longitudinally, with maternal mind-mindedness assessed at 14 months of age and child’s expressive linguistic abilities at 24 and 36 months through observational measures. Multilevel models showed that linguistic abilities increased from 24 to 36 months of age, but that this increase was stronger in full-term infants. Maternal mind-mindedness also contributed to this growth, playing a stronger role in preterm infants than in full-term infants. Altogether, these findings contribute more deeply to the understanding of language development in preterm infants and of the joint contribution made by biological risk and environmental factors; from a practical standpoint, they suggest the importance of addressing mother’s mind-mindedness in order to support child’s language development.     

Born lucky? The relationship between feeling lucky and month of birth

Research suggests that season of birth is associated with several psychiatric and neurological disorders, and also with adult monoamine neurotransmitter turnover. Personality traits are modulated in part by neurotransmitters; and population studies show season of birth variations in adult personality traits such as novelty seeking. Also, neurotransmitters are involved in suicidal behavior; and studies have found season of birth associations with suicide methods. The present general population survey was conducted via the Internet, and involved 29,584 self-selected participants (51.6% women) from 67 countries. For those born in the UK (75.6%), we investigated the relationship between season of birth, the participant’s belief in being a lucky person, and personality attributes related to this belief. In both genders and in all age groups, birth during the summer half-year was associated with significantly higher belief in being lucky, as compared to birth during the winter half-year, with a maximum around birth in May and a minimum around birth in November. Women scored significantly higher on listening to intuition and employing techniques to improve intuition, in perseverence, believing in positive long-term outcomes, and chatting to strangers. Men scored significantly higher on feeling lucky, not worrying or dwelling on failures, and expecting good things in life.     

Examination of the processing speed account in a population-based longitudinal study with narrow age cohort design

The processing speed account suggests that general slowing of mental processing speed results in an overall decline, especially age-related decline, in other cognitive domains. Support for the speed account comes mainly from cross-sectional studies with participants that vary in age (age-heterogeneous samples). This study investigated how well variations in processing speed predict change of episodic recall in a longitudinal framework and examined with the Narrow Age Cohort (NAC) design. Data were obtained from Betula, a population-based longitudinal study. Both 5-year (n= 490; Time 3 - Time 4) and 10-year follow-up results (n= 608; Time 1 - Time 3) were used. In both samples, which were subjected to prospective dementia screening, we found considerably weaker associations in longitudinal data compared to cross-sectional, and also weaker associations in age-homogeneous than in age-heterogeneous samples. The results provide little support for the speed account.     

Maternal Predictors of Rejecting Parenting and Early Adolescent Antisocial Behavior

The present study examined relations among maternal psychological resources, rejecting parenting, and early adolescent antisocial behavior in a sample of 231 low-income mothers and their sons with longitudinal assessments from age 18 months to 12 years. The maternal resources examined were age at first birth, aggressive personality, and empathy. Each of the maternal resources predicted rejecting parenting during early childhood in structural equation models that controlled for toddler difficult temperament, and rejecting parenting in early childhood predicted antisocial behavior in early adolescence. Rejecting parenting accounted for the indirect effect of each of the maternal resources on antisocial behavior, but a direct effect was also supported between maternal aggressive personality and youth antisocial behavior. Results highlight the importance of these relatively understudied maternal resources and have implications for prevention and intervention programs that focus on parenting during early childhood.     

Mapping the scale of the narcissism epidemic: Increases in narcissism 2002–2007 within ethnic groups

[Twenge, J. M., Konrath, S., Foster, J. D., Campbell, W. K., & Bushman, B. J. (2008a). Egos inflating over time: A cross-temporal meta-analysis of the Narcissistic Personality Inventory. Journal of Personality, 76, 875–901.] found that Narcissistic Personality Inventory (NPI) scores increased between 1982 and 2006 among college students nationwide, but [Trzesniewski, K. H., Donnellan, M. B., & Robins, R. W. (2008). Do today’s young people really think they are so extraordinary? An examination of secular changes in narcissism and self-enhancement. Psychological Science, 19, 181–188.] found that NPI scores remained unchanged over that time in samples from the University of California (UC) campuses. The increasing numbers of Asian-Americans at the UCs over time may have masked changes in narcissism, as Asian-Americans score lower on the NPI. When examined within ethnic groups, Trzesniewski et al.’s data show that NPI scores increased significantly between 2002 and 2007 at twice the rate of the yearly change found over 24 years in Twenge et al. (2008a). The overall means also show a significant increase 2002–2007. Thus the available evidence suggests that college students are endorsing progressively more narcissistic personality traits over the generations.     

剖宫产产后抑郁的发生与社会支持、应对方式及防御方式的相关性

了解剖宫产产后抑郁的发生与社会支持、应对方式及防御方式的相关性,对剖宫产患者进行抑郁状况的调查,并对其影响因素进行分析。对抑郁组与非抑郁组的一般情况构成比比较,并采用抑郁自评量表（SDS）、应付方式评定量表（YFFS）、社会支持问卷（ISSI）、防御方式问卷（DSQ）进行测评。社会支持、应对方式及防御方式对产后抑郁的发生均产生一定作用。应付方式、社会支持及防御方式是影响剖宫产患者产后抑郁的重要因素。     

石河子市剖宫产患者产后抑郁状况调查及影响因素分析

为了了解剖宫产患者产后抑郁的发生情况,对剖宫产患者进行抑郁状况的调查,并对其影响因素进行分析,对抑郁组与非抑郁组的一般情况构成比比较,并采用抑郁自评量表（SDS）、应付方式评定量表（YFFS）、社会支持问卷（ISSI）进行测评。结果显示,应付方式评定量表中的主观支持（P〈0．05）,社会支持问卷中退避倾向性进入回归方程,提示应付方式及社会支持是影响剖宫产患者产后抑郁的重要因素。