A behavior-genetic study of parenting quality, infant attachment security, and their covariation in a nationally representative sample

A number of relatively small-sample, genetically sensitive studies of infant attachment security have been published in the past several years that challenge the view that all psychological phenotypes are heritable and that environmental influences on child development--to the extent that they can be detected--serve to make siblings dissimilar. Using the twin subsample (N = 485 same-sex pairs) of the nationally representative Early Childhood Longitudinal Study-Birth Cohort, the authors provide evidence that parenting quality and infant attachment security observed at 24 months, as well as their covariation, are a product of shared and nonshared environmental (but not genetic) variation among children. In contrast, genetic differences between infants played a prominent role in explaining observations of temperamental dependency.     

Associations between maternal mind-mindedness and infant attachment security: investigating the mediating role of maternal sensitivity

In the last 20 years, three meta-analyses suggested that the relation between maternal sensitivity and infant attachment security was lesser in magnitude than originally believed. This led to a search for other parental behaviors likely to contribute to the development of attachment security. Based on previous theoretical propositions and empirical findings suggesting that maternal mind-mindedness may contribute to infant attachment security by favoring maternal sensitivity, the aim of this study was to examine whether sensitivity mediates the relation between maternal mind-mindedness and infant attachment security. Fifty mother-infant dyads took part in two home visits (12 months and 15 months), allowing for assessment of maternal sensitivity (T1), mind-mindedness (T1), and infant attachment (T2). The results confirmed that maternal sensitivity mediates the relation between mind-mindedness and infant attachment. The findings are discussed in light of the assessments used in this and previous studies.     

Maternal sensitivity during distressing tasks: a unique predictor of attachment security

The extent to which maternal sensitivity during a non-arousing free play task and during distressing tasks at 6 months predicted infant-mother attachment security was examined. When considered simultaneously, only maternal sensitivity during distressing tasks predicted subsequent attachment security. Infant temperament was unrelated to attachment security.     

On the relation between maternal state of mind and sensitivity in the prediction of infant attachment security

Attachment theorists assume that maternal mental representations influence responsivity, which influences infant attachment security. However, primary studies do not support this mediation model. The authors tested mediation using 2 mother-infant samples and found no evidence of mediation. Therefore, the authors explored sensitivity as a moderator, studying the (a) interaction of mental representation and sensitivity as it predicts infant attachment security and (b) level of sensitivity in mothers whose infants' attachment security is either concordant or discordant with their own. The interactional analyses were not significant. But the match-mismatch data showed that when mother-infant attachment strategies were discordant, maternal sensitivity was more consistent with infant than maternal attachment strategy. These findings are congruent with an interpretation of sensitivity as a moderator that can block transmission of attachment strategy.     

Implications of the restricted range of family environments for estimates of heritability and nonshared environment in behavior-genetic adoption studies.

Group and individual-difference adoption designs lead to opposite conclusions concerning the importance of shared environment (SE) for the child outcomes of IQ and antisocial behavior. This paradox could be due to the range restriction (RR) of family environments (FE) that goes with adoption studies. Measures of FE from 2 of the most recent adoption studies indicate that RR is substantial, about 67%, which corresponds to the top half of a normal FE distribution. RR of 67% cuts effect sizes and R2 statistics by factors of 3 and 2-2.5, respectively. Because selection into an adoption study in inherently a between-family process and assuming that comparable restriction of genetic (G) influences are absent, estimates of SE, G, and nonshared influences will be substantially biased, respectively, down, up, and up by RR. Corrections for RR applied to adoption studies indicate that SE could account for as much as 50% of the variance in IQ.     

Sleep disturbance in intentional self-awakenings: behavior-genetic and transient factors

Unaided self-awakenings were studied, using a baseline vs treatment comparison with 84 undergraduate subjects serving as their own controls. The data suggest that situational constraints related to time and sleep environment affect successful awakenings, that the subjects' instructional set produces a temporary sleep disturbance, and that chronically sleep satisfied or dissatisfied groups respond differently to the procedures used here.     

Father involvement, paternal sensitivity, and father-child attachment security in the first 3 years

To reach a greater understanding of the early father-child attachment relationship, this study examined concurrent and longitudinal associations among father involvement, paternal sensitivity, and father-child attachment security at 13 months and 3 years of age. Analyses revealed few associations among these variables at 13 months of age, but involvement and sensitivity independently predicted father-child attachment security at age 3. Moreover, sensitivity moderated the association between involvement and attachment security at 3 years. Specifically, involvement was unrelated to attachment security when fathers were highly sensitive, but positively related to attachment security when fathers were relatively less sensitive. Father involvement was also moderately stable across the two time points, but paternal sensitivity was not. Furthermore, there was significant stability in father-child attachment security from 13 months to 3 years. Secure attachment at 13 months also predicted greater levels of paternal sensitivity at 3 years, with sensitivity at age 3 mediating the association between 13 month and 3 year attachment security. In sum, a secure father-child attachment relationship (a) was related to both quantity and quality of fathering behavior, (b) remained relatively stable across early childhood, and (c) predicted increased paternal sensitivity over time. These findings further our understanding of the correlates of early father-child attachment, and underscore the need to consider multiple domains of fathers' parenting and reciprocal relations between fathering behavior and father-child attachment security.     

Phenotypic, genetic, and nonshared environmental parallels in the structure of personality: a view from the multidimensional personality questionnaire

How closely do observed, phenotypic personality structures correspond with underlying, genetic, and environmental personality structures? This question was addressed using data from 2,490 pairs of twins from the Minnesota Twin Registry, who completed A. Tellegen's (1982) Multidimensional Personality Questionnaire (MPQ). Phenotypic, additive genetic, and nonshared environmental correlations were computed among the MPQ's eleven primary scales. Principal component analyses of all three matrices revealed three broad, higher-order components that were readily interpreted as negative emotionality, positive emotionality, and constraint. The components from all three matrices were highly comparable, suggesting that the observed, phenotypic structure of personality corresponds closely with the underlying, etiological structure of personality.     

In search of reflective behavior and shared understanding in ad hoc expert teams.

The work reported on here concentrates on virtual ad hoc expert teams for the integration of learning and working, as ad hoc teams seem to be one way to cope with complexity in a knowledge-intensive society. In order to let ad hoc teams learn and work together, group members require effective communication and shared understanding among each other. Two empirical studies were conducted to study collaborative learning and shared understanding, one exploratory study and one experiment. In the first study, it was explored how virtual design teams work and learn together. Based on conceptual ideas, collaborative learning and shared understanding were observed and assessed in a design team over a period of four months. It was concluded that shared understanding was suboptimal; mainly due to the effect that hardly any questions were raised and answered. The second study elaborates on the need to encourage question-answer patterns and reflective behavior in such teams. A tool was developed that supported questioning behavior. As it was hypothesized that this tool leads to better questioning behavior, which in turn results in more reflective behavior and in increased shared understanding, an experiment was conducted. In the exploratory study, as well as in the experimental study, the perceived shared understanding increased over time. However, in both studies suboptimal questioning behavior and little reflective activity were noticed. The main results of the two empirical studies are compared and discussed.     

Negative affectivity as a mediator of the association between adult attachment and marital satisfaction

Although the association between adult attachment and marital satisfaction is well documented, research has not examined processes by which attachment affects satisfaction. Drawing on attachment-oriented conceptualizations of affect regulation, the present study tested the hypothesis that negative affectivity mediates the association between attachment and marital satisfaction. Data from two samples of married couples were used to test the hypothesis. In both samples, negative affectivity mediated the association between some aspects of attachment insecurity and marital dissatisfaction, although attachment also retained a direct association with marital satisfaction in a number of cases. Results are discussed in terms of attachment-oriented conceptualizations of the function of negative emotion in marriage, and the empirical and conceptual overlap between attachment and negative affectivity.     

Genetic and environmental factors in orientation anisotropy: a field study in the British Isles

Visual acuity for the detection of gratings at four orientations was measured for groups of ten boys and ten girls aged five to seven years, from the following four populations: Scots in Glasgow, Pakistanis in Glasgow, Gaels in Stornoway (Outer Hebrides) and East Anglians in Littleport (Cambridgeshire fenlands). The Glaswegians, both Scottish and Pakistani, showed the normal pattern of anisotropy, with poorest acuity for oblique orientations; the East Anglians showed no significant anisotropy; while the Gaels were unusual in showing poorest horizontal acuity. A group of fourteen Pakistani children in Stornoway differed slightly from a matched group of Gaels. The group differences bore little relation to the visual environments, and were probably due to genetic or cultural factors. The relatively poor horizontal acuity of the Gaels was not correlated with astigmatism. Sex differences were also found, with the boys showing higher mean acuity and a higher ratio between vertical and oblique acuity.     

Within-person variation in security of attachment: a self-determination theory perspective on attachment, need fulfillment, and well-being

Attachment research has traditionally focused on individual differences in global patterns of attachment to important others. The current research instead focuses primarily on within-person variability in attachments across relational partners. It was predicted that within-person variability would be substantial, even among primary attachment figures of mother, father, romantic partner, and best friend. The prediction was supported in three studies. Furthermore, in line with self-determination theory, multilevel modeling and regression analyses showed that, at the relationship level, individuals' experience of fulfillment of the basic needs for autonomy, competence, and relatedness positively predicted overall attachment security, model of self, and model of other. Relations of both attachment and need satisfaction to well-being were also explored.     

The association between attachment orientations and partner evaluations: An ideal standards perspective

This research examined links between attachment orientations and evaluations of potential and existing relationship partners with respect to ideal standards. In Study 1, attachment anxiety and avoidance predicted the tradeoffs individuals made when choosing between potential mates. In Studies 2 and 3, attachment anxiety and avoidance were associated with ideal partner discrepancies within existing relationships. The findings across the three studies suggest that highly anxious individuals are more likely to use the ideal partner warmth/trustworthiness and status/resources dimensions when evaluating hypothetical and actual romantic partners, whereas highly avoidant individuals are more inclined to use the ideal partner vitality/attractiveness and status/resources dimensions when making partner evaluations. These novel findings are discussed in terms of evolutionary models of mating strategies and evaluations.     

Orthogonal dreams in an oblique world: A meta-analysis of the association between attachment anxiety and avoidance

The association between attachment dimensions (anxiety and avoidance) can influence measurement creation and statistical analyses. Our goal was to test the assumption that anxiety and avoidance was orthogonal in two popular measures: the ‘Experience in Close Relationships Scale - Revised’ (ECR-R) and the original ‘Experiences in Close Relationships Scale’ (ECR). Our meta-analysis of 242 studies revealed that despite both scales being highly reliable, the anxiety-avoidance correlation was higher for the ECR-R than the ECR. Other variables also moderated the association. Implications include methods of statistical analysis and recommendations for future measurement creation and use.     

The moderating role of attachment insecurities in the association between social and physical pain

We examined the effects of social exclusion and attachment insecurities (anxiety, avoidance) on physical pain sensitivity, hypothesizing that anxiety would predict greater physical pain sensitivity only following social exclusion. Participants were either included in or excluded from a computer-based ball-tossing game and then completed a coldpressor task. Anxious men showed greater physical pain sensitivity when excluded, but not when included. Moreover, individuals (men and women) high on both anxiety and avoidance showed greater physical pain sensitivity when excluded, but not when included. Conclusions: Anxious individuals’ heightened physical pain sensitivity following exclusion is a manifestation of hyperactivation of their attachment systems, and when threatened, avoidant individuals who are also high in anxiety are less successful in deactivating their attachment systems.     

Self-reported discrimination and discriminatory behaviour: the role of attachment security

Past research shows that attachment security is linked to low prejudice (Hofstra, Van Oudenhoven & Bunnk, 2005; Mikulincer & Shaver, 2001). We extend this research by examining the role of attachment security in discriminatory choices and discriminatory behaviour. The current study examines the influence of primed attachment security (vs. neutral prime) on self-reported discrimination and actual discriminatory behaviour towards Muslims. Results illustrate that primed attachment security (vs. a neutral prime) significantly predicts both the choice to discriminate against Muslims and subsequent behavioural discrimination towards a Muslim. Implications for increasing attachment security as a means of reducing prejudice and discrimination are discussed.     

Both maternal sensitivity and atypical maternal behavior independently predict attachment security and disorganization in adolescent mother-infant relationships

Extant theory holds that variation in attachment security is largely determined by caregiver sensitivity whereas disorganization has its roots in atypical interactions that frighten the infant. These hypotheses were confirmed in the current study of a high-risk sample but, contrary to current theory, both atypical maternal behavior and maternal sensitivity were also significant independent predictors of attachment disorganization and security.     

In search of meaningful participation: Making connections between emotions and learning

Research on participation has advanced our understanding of children's everyday lives by increasingly bringing into focus what society perceives as ‘meaningful’. This piece is driven by a desire to extend this investigation by sharing a creative research journey. Here, we have combined our theoretical musings, initial conversations with children, and evolving methodological approaches to show how our research approach has changed as we seek meaningful ways to involve children. Accordingly, this paper highlights the positive consequences of a reflective research process that focuses on children's emotions as we consider children's capacities as learners. We argue that by critically engaging with what is meaningful in the context of participation, we can demonstrate the value of children's voices, challenging dominant discourses about children's competence.