Although shyness is a ubiquitous phenomenon with early developmental origins, little research has examined the influence of prenatal exposures on the developmental trajectory of shyness. Here, we examined trajectories of shyness from childhood to adulthood in three groups (N = 254), with varying degrees of prenatal adversity as indicated by the number of stressful exposures: extremely low birth weight (ELBW; <1000 g) survivors prenatally exposed to exogenous corticosteroids (ELBW+S, n = 56); ELBW survivors not prenatally exposed to exogenous corticosteroids (ELBW+NS, n = 56); and normal birth weight (NBW, n = 142) controls. Multilevel modeling revealed that the ELBW+S individuals exhibited the highest levels of childhood shyness, which remained stable into adulthood. The ELBW+NS and NBW controls had comparably low levels of childhood shyness; however, the ELBW+NS individuals experienced patterns of increasing shyness, while NBW controls displayed decreases in shyness into adulthood. We speculate that individuals exposed to multiple prenatal stressors (i.e., ELBW+S) may be developmentally programmed to be more sensitive to detecting social threat, with one manifestation being early developing, stable shyness, while increasing shyness among ELBW+NS individuals may reflect a later developing shyness influenced by postnatal context. We discuss the implications of these findings for understanding the developmental origins and developmental course of human shyness from childhood through adulthood.

Previous research has discovered different subtypes of social withdrawal based on motivations to approach or avoid social interactions. Each of these motivations are uniquely related to indices of maladjustment during emerging adulthood, including aspects of the self. However, research has yet to investigate whether or not relationship quality moderates these associations. The purpose of this study was to examine whether relationship quality with best friends, romantic partners, mothers, and fathers, respectively, serve as protective factors in the negative links between shyness and avoidance and self-worth. The participants included 519 college students (Mage = 19.87, SD = 1.99, 61% female) from four universities across the United States. Results revealed that relationship quality with both best friends and romantic partners moderated the relation between shyness and self-worth. The differences between parent and peer relationships are discussed.

Whereas many young children show initial wariness on meeting a stranger, shyness that lasts into middle childhood may be indicative of concurrent problems and subsequent disorder. Adjustment problems of an internalising nature, such as low self-esteem, loneliness, and anxiety may occur. Special significance has, however, been ascribed to preadolescent friendships as a means of validating self-worth and buffering against loneliness and anxiety. The main aim of the present study is to examine associations between shyness, perceptions of friendship quality, and indices of adjustment related to internalising problems.

The study involves a sample of 8.4–10.6-year-olds (N=50), preselected at 4.5 years to include a high proportion of shy children. Ratings of shyness to an unfamiliar adult had been made by different observers at 4.5 and 7 years, and at the present ages by another observer, mothers, and teachers. Observer-rated shyness was highly consistent over time and was significantly correlated with mothers' and teachers' ratings, although both significantly underestimated children's shyness relative to observer ratings. Compared with the younger children (mean age of 9 years), observed shyness (a composite over all three age points) increased in salience for the older children (mean age of 10 years), becoming significantly correlated with trait anxiety as well as low global self-worth. Indeed, global self-worth took on a central role for the older children, showing significant correlations not only with observed shyness and internalising problems (loneliness and anxiety), but also with perceptions of social acceptance and classmate support as well as friendship quality, with a named “best friend”. Thus by 10 years of age, aspects of peer relationships may influence and be influenced by global self-worth, with a possible buffering effect on any potential detrimental effects of shyness.

A population-based sample of Norwegian children aged 18 months (N=921), 30 months (N=784), and 50 months (N=737) was examined with the EAS Temperament Survey (Buss & Plomin, 1984). The factor structure, psychometric properties, and stability estimates of the instrument were assessed. A cross-validation of the temperament factors of Emotionality, Activity, and Shyness show that the covariance structure conforms with the three scales described by Rowe and Plomin (1977) and Boer and Westenberg (1994). When items from the experimental scale of Sociability were included in the analysis, a four-factor solution confirmed the separate usability of this scale as well. The factor structure does not seem to vary substantially with the age of the children. The scores on the four temperament scales show high stability from one time of measurement to the next. Although no strong gender differences were found, there were significant age trends. Emotionality and Shyness increased from 18 to 50 months, while Activity and Sociability decreased. The study confirmed the structure and stability of the EAS over 3 years among young children, providing support for its use with children as young as 18 months.