Andrée Pomerleau

The Development of Infants' Responses to People and a Doll: Implications for Research in Communication

Abstract The behavior of eight babies was studied longitudinally when facing people and a doll. The eight babies were observed biweekly from 3 to 25 weeks. Among them, five continued to be observed on a monthly basis up to 45 weeks. At each visit the babies were presented with their mother, a female-stranger, and a doll who were alternately active and inactive. Each condition lasted 45 s at 3, 5 and 7 weeks and 60 s thereafter. The results showed that by 5 to 9 weeks the proportion of time babies looked, smiled and vocalized as well as moved their arms toward people differed significantly from those produced to the doll when confounding variables such as familiarity and activity of the stimuli were manipulated. This pattern of early differential responsiveness, together with important developmental changes over the 10-month period, suggests that infants are reacting to communication-related cues in the presence of social stimuli. The implications of these findings for the development of communication are discussed.

Health status, cognitive and motor development of young children adopted from China, East Asia, and Russia across the first 6 months after adoption

We compared health status, anthropometric and psychological development of 123 children adopted before 18 months of age from China, East Asia (Vietnam, Taiwan, Thailand, South Korea, Cambodia), and Eastern Europe (mostly Russia). Data were collected close to the time of arrival, and 3 and 6 months later. Anthropometric measures included weight, height, and head circumference percentiles, and weight/height and height/age ratios (indices of acute and chronic malnutrition, respectively). We assessed cognitive (MDI) and motor (PDI) developments with the Bayley Scales of Infant Development (Bayley, 1993). At time of arrival, children presented physical, cognitive, and motor delays, as well as health problems. Growth parameters improved with time, but differently among the groups. East Asian children, in a better physical state at time of arrival, changed less than the others did across time. Children adopted from Russia globally had lower MDI than the others, while children adopted from East Asia had the highest PDI. Hierarchical linear modelling indicated that initial MDI was related to height/age ratio (index of chronic malnutrition), while its change over time was related to age at time of arrival. PDI was also related to height/age ratio, as well as to presence/absence of neurological signs at time of arrival. Infants with a higher risk index had lower MDI and PDI initial scores.

Insiders’ views of marital sex: A dyadic analysis

This research focuses on insiders’ views of marital sex and their dyadic patterning. The analyses were conducted based on seventy‐two (72) couples’ assessments of their recent sexual interactions. Non‐genital and genital activities were assessed as a function of the respondents’ and the actors’ gender, and as a function of constructs that were specific to the marital partners as individuals and as a marital dyad. Consistent differences were found between husbands’ and wives’ perceptions of discrepancies within their couple. Regardless of respondents’ gender, couples reported that wives were genitally less active than husbands and that this was in accordance with the wives’ preferences. The results are discussed with respect to the advantages of using a dyadic methodology for measuring dimensions of sex which involve interpersonal behaviors.

Cardiac and Behavioral Responses to Rocking Stimulations in One- and Three-Month-Old Infants

Cardiac and behavioral reactions to lateral rocking stimulations were analysed at two different ages (1 and 3 months) and at two speeds of motion for the younger infants. Sixteen 1- and 3-mo.-old infants received 12 10-sec. trials of four complete cycles of vestibulokinesthetic stimulation (rapid rocking) and another group of 10 1-mo.-olds received one complete cycle in the same time period (slow rocking) provided by a motorized cradle. Stimulations were given when infants were in an alert state. Rapid and slow rocking induced similar cardiac responses in younger infants; these responses varied according to the type of motor reaction observed at stimulus onset. Cardiac acceleration was shown with motor activation and cardiac deceleration with motor quieting. In 3-mo.-olds, cardiac deceleration appeared with both types of motor reaction. A strong link between cardiac and behavioral responses in younger infants may prevent the occurrence of the usual simple cardiac index of orienting (heart-rate deceleration). In older infants, cardiac deceleration to rocking stimulation appeared even when it produced concomitant behavioral arousal. Vestibulokinesthetic stimulation is interpreted as having an important homeostatic effect on the young organism.