Defense Announcement for Katherine Leppert
Event Date and Time:
Thursday, September 6, 2018 - 4:00pm
Biology Psychology 1140B
Dissertation Title: A Daily Diary Analysis of Preschool Depressive Behaviors: Same Day and Prospective Associations Across 14 Days
Advisor: Dr. Lea Dougherty
Committee Members: Drs. Andres De Los Reyes, Michael Meinzer, Jonathan Mohr
Dean's Representative: Dr. Natasha Cabrera
Abstract: Depressive disorders can be observed in early childhood and are associated with
significant concurrent and prospective impairment. Although young children demonstrate similar
depressive behaviors as older children and adults, certain depressive behaviors, such as sadness and irritability, are more common in early childhood whereas other depressive behaviors, such as loss of pleasure and suicidal ideation, are much less common. However, little is known about day-to-day variations in common depressive behaviors and factors impacting those variations in early childhood. The current study examined the day-to-day variability and co-occurrence of two common depressive behaviors in young children, sadness and irritability, and predictors of their day-to-day change. Participants included 291 parents of preschool-aged children (ages 3-5).
Parents completed a baseline questionnaire assessing demographics, current
emotional/behavioral problems, and functional impairment, and then completed an electronic
daily diary for 14 days assessing the frequency of daily depressive behaviors, sleep quality, and
parent-child relationship functioning. Results indicated that irritability and sadness frequently co-
occurred during the same day in preschool-aged children and were concurrently and
prospectively associated with parent-child relationship functioning but not sleep quality.
Moreover, we observed between-person stability, but within-person variability, in children’s
sadness and irritability across 14 days, and that this variability was moderated by several factors. With few exceptions, we observed greater between-person stability in sadness and irritability for older preschoolers, for males, and for children with overall better functioning, namely children without the presence of less common depressive symptoms, with fewer baseline psychiatric symptoms and lower baseline impairment, and with better parent-child relationship functioning and sleep quality. We observed greater within-person variability in sadness and irritability for males and for children with overall better functioning, namely children when lower average irritability, fewer baseline psychiatric symptoms and lower baseline impairment, and better parent-child relationship functioning. Importantly, our findings highlight stability of children’s sadness and irritability relative to peers but variability relative to their own mean sadness and irritability, as well as provide evidence of factors predicting the day-to-day variability of these common depressive behaviors. Understanding daily variation in child depressive behaviors and factors predicting variation can identify at-risk children and provide targets for prevention and intervention, which is particularly crucial given that preschool depression predicts later depression and other psychiatric disorders.