Contributions of age of start, cognitive abilities and practice to musical task performance in childhood.

Studies with adult musicians show that beginning lessons before age seven is associated with better performance on musical tasks and enhancement in auditory and motor brain regions. It is hypothesized that early training interacts with periods of heightened neural development to promote greater plasticity and better learning and performance later in life. However, we do not know whether such effects can be observed in childhood.

Rhythm and Melody Tasks for School-Aged Children With and Without Musical Training: Age-Equivalent Scores and Reliability.

Measuring musical abilities in childhood can be challenging. When music training and maturation occur simultaneously, it is difficult to separate the effects of specific experience from age-based changes in cognitive and motor abilities. The goal of this study was to develop age-equivalent scores for two measures of musical ability that could be reliably used with school-aged children (7-13) with and without musical training.

Rates and risk factors associated with depressive symptoms during pregnancy and with postpartum onset.

The objectives of this study were to evaluate the prevalence of depressive symptoms in the third trimester of pregnancy and at 3 months postpartum and to prospectively identify risk factors associated with elevated depressive symptoms during pregnancy and with postpartum onset. About 364 women attending antenatal clinics or at the time of their ultrasound were recruited and completed questionnaires in pregnancy and 226 returned their questionnaires at 3 months postpartum. Depressed mood was assessed by the Edinburgh Postnatal Depression Scale (EPDS; score of ≥ 10).

Perceived benefits and barriers to leisure-time physical activity during pregnancy in previously inactive and active women.

This study compared perceived benefits and barriers to leisure-time physical activity during pregnancy among women who were insufficiently active or inactive before pregnancy. Eighty-two pregnant women completed questionnaires assessing leisure-time physical activity benefits/barriers, exercise self-efficacy, social support, depressed mood, pre-pregnancy and current physical activity and fatigue. Multivariable regression analyses identified factors associated with exercise benefits/barriers for the two pre-pregnancy leisure-time physical activity groups.

PTSD following childbirth: a prospective study of incidence and risk factors in Canadian women.

Objective: The goals of the present study were to estimate the incidence and course of full and partial Post-Traumatic Stress Disorder (PTSD) following childbirth and to prospectively identify factors associated with the development of PTSD symptoms at 1month following childbirth.

Methods: The sample comprised 308 women, with assessments at four time points: 25-40weeks gestation, 4-6weeks postpartum, 3 and 6months postpartum. Current and prior PTSD were assessed by the Structured Clinical Interview for DSM-IV (SCID-I) and the Modified PTSD Symptom Scale Self-Report (MPSS-SR).