Genetic and early environmental components in sociodemographic influences on adult body fatness.

Genetic and early environmental components in sociodemographic influences on adult body fatness.

OBJECTIVE To explore genetic and environmental contributions to the influence of parental social class and region of upbringing on adult human fatness. DESIGN Survey of sample of adults who had been adopted in childhood to relate their body mass index to sociodemographic variables in a series of multiple linear regression analyses. SUBJECTS 4643 Subjects traced from a register of 5455 non-f...

Environmental and genetic influences on early attachment

Attachment theory predicts and subsequent empirical research has amply demonstrated that individual variations in patterns of early attachment behaviour are primarily influenced by differences in sensitive responsiveness of caregivers. However, meta-analyses have shown that parenting behaviour accounts for about one third of the variance in attachment security or disorganisation. The exclusivel...

Socioeconomic modifiers of genetic and environmental influences on body mass index in adult twins.

OBJECTIVE Individual measures of socioeconomic status (SES) suppress genetic variance in body mass index (BMI). Our objective was to examine the influence of both individual-level (i.e., educational attainment, household income) and macrolevel (i.e., neighborhood socioeconomic advantage) SES indicators on genetic contributions to BMI. METHOD The study used education level data from 4,162 mono...

Health Psychology Socioeconomic Modifiers of Genetic and Environmental Influences on Body Mass Index in Adult Twins

Stability and Change in Adult Personality: Genetic and Environmental Components

The enduring nature of personality, particularly in adulthood, has been demonstrated in numerous cross-sectional and longitudinal studies where high stability has been observed even with decades between testing intervals. Biometrical studies, reporting genetic e€ects as the primary cause of familial resemblance, have been interpreted as lending further support to theories concerning an inherent...