Nicole Lucassen

Parenting, corpus callosum, and executive function in preschool children

In this longitudinal population-based study (N = 544), we investigated whether early parenting and corpus callosum length predict child executive function abilities at 4 years of age. The length of the corpus callosum in infancy was measured using postnatal cranial ultrasounds at 6 weeks of age. At 3 years, two aspects of parenting were observed: maternal sensitivity during a teaching task and maternal discipline style during a discipline task. Parents rated executive function problems at 4 years of age in five domains of inhibition, shifting, emotional control, working memory, and planning/organizing, using the Behavior Rating Inventory of Executive Function-Preschool Version. Maternal sensitivity predicted less executive function problems at preschool age. A significant interaction was found between corpus callosum length in infancy and maternal use of positive discipline to determine child inhibition problems: The association between a relatively shorter corpus callosum in infancy and child inhibition problems was reduced in children who experienced more positive discipline. Our results point to the buffering potential of positive parenting for children with biological vulnerability.

The Formal Pace of Sesame Street over 26 Years

Television producers often use a high rate in the succession of visual and auditory features in their programs to attract the attention of viewers. In this study an attempt was made to measure the formal pace of television programs by scoring the rates of an extensive set of formal visual and auditory characteristics. Sesame Street was chosen as a focal point because this educational program—with its high pace—is very successful in its competition with the majority of commercial programs from which children can choose to watch at home. The analyzed material consisted of 49 Dutch episodes of Sesame Street broadcast between 1977 and 2003. The formal pace characteristics of separate program items from Sesame Street could be reliably established. Factor analysis indicated that clear pace factors were (a) “editing,” consisting of a frequent use of different types of shots (total shots, medium shots, and close-ups) combined with a large number of cuts and (b) speech rate. Over a period of 26 years, the pace of editing increased: the mean number of cuts increased from about 4 to 8 per minute. The mean speech rate decreased from 175 to 139 words per minute.

Assessing expressed emotion during pregnancy

We assessed expressed emotion (EE) with an adapted version of the five-minute speech sample in 847 pregnant women. The prevalence of high EE was 6%. High EE was significantly associated with having a first child, low income, maternal childhood trauma and lack of parental emotional warmth during childhood.

Expressed Emotion During Pregnancy Predicts Observed Sensitivity of Mothers and Fathers in Early Childhood

SYNOPSIS Objective. Relations between maternal and paternal expressed emotion during pregnancy and observed sensitive parenting behavior of mothers (N = 553) and fathers (N = 518) in early childhood were examined. Design. Expressed emotion, represented by emotional overinvolvement and criticism, was measured around the 34th week of gestation using an adapted version of the Five-Minute Speech Sample. Maternal and paternal sensitivity, indexed by supportiveness and intrusiveness, was observed in a semi-structured interaction between parent and child at age 4. Multilevel analyses were conducted to account for shared variance among the families. Associations between expressed emotion and sensitive parenting behavior were subsequently stratified by parent gender. Results. Emotional overinvolvement during pregnancy was associated with lower levels of sensitive parenting. More specifically, mothers’ emotional overinvolvement was related to lower levels of supportive parenting, and fathers’ overinvolvement was related to higher levels of intrusiveness. Criticism during pregnancy was not associated with dimensions of sensitivity. Conclusions. Mothers’ and fathers’ emotional overinvolvement before the birth of their child was differently related to supportive and intrusive parenting 4 years later, suggesting gender-specific effects of parental expressed emotion.