Periodic Reporting for period 3 - CAPE (Ghosts from the past: Consequences of Adolescent Peer Experiences across social contexts and generations)
Okres sprawozdawczy: 2021-02-01 do 2022-07-31
The overall objective of CAPE is to apply theoretical assumptions and empirical findings from other fields to the study of peer relationships and their consequences across contexts and generations. Consequences of adolescent peer experiences across contexts need to be studied systematically to understand whether, how, and why peer experiences exert such a long-term influence on psychological health and wellbeing. Studying the consequences of adolescent peer experiences across generations involves multiple disciplines and is challenging yet at the forefront of developmental research and might be a gamechanger to our understanding of social development.
In CAPE, we investigate whether and how peer experiences are transmitted a) to adult friendships and romantic relationships, and b) across generations, i.e. passed on to offspring, to shed light on how the “ghosts from peer past” affect young adults’ relationships and their children’s early social development. We examine longitudinal links between adolescent peer and young adult close relationships and test whether parents’ peer experiences affect offspring’s social development and peer experiences. Psychological functioning, parenting, temperament, genetic, and epigenetic transmission mechanisms are examined separately and in interplay, which 1) goes beyond current state-of-the-art in social development research, and 2) significantly broadens current bio-socially oriented work on genetic effects in the peer context. We utilize data from TRAILS (www.trails.nl/eng) participants who have been followed since age 11. To study intergenerational transmission, the TRAILS NEXT sample of participants with children is extended until offspring are seven years old. Next to quantitative analyses, we conduct in-depth interviews with young parents (not TRAILS participants) in which we ask about their memories of their own adolescent peer relationships and how these might impact current friendships, partner relationships, and how they bring up their children.
- Collection of DNA using buccal cells from TRAILS participant, their partner and their offspring at 30 months offspring age
- Collection of questionnaire data on self-perception and perception of relationship with others from TRAILS participant using hostile attribution bias scale
- Development of protocol and training for Berkeley Puppet Interview and parent-child interaction task
- Development of a coding scheme to elucidate early parent-child interactions at 3 and 30 months child age; with first ~100 interaction videos coded by Bachelor students
- Qualitative interviews on impact of adolescent peer experiences on adult relationships and upbringing of own offspring
Apart from those planned activities, we were able to send biosamples as collected in 2006 from TRAILS parents for genotyping. This is fortunate as the quality of the samples would have been deemed not sufficient anymore for analyses after >10 years of storing in the freezer but initial analyses indicated a sufficient DNA yield to enable genetically informed analyses involving TRAILS participants and their parents. These data, together with the data collected as part of the action and in combination with highly detailed information on environmental and individual factors as collected in TRAILS, are of extremely high value to developmental psychologists. Although genotyping was somewhat delayed by Covid-19, we are currently preparing the data for use in analyses. Note that this activity was conducted in addition to the activities as described in the action.
Next to activities related to data collection, various journal articles and book chapters have been published or are in press or submitted and the CAPE team has intensified their excellent collaboration with the TRAILS team at the University Medical Centre, with Prof. Christoph Stadtfeld at ETH Zurich (a planned visit in Summer 2020 had to be deferred due to the Covid-19 pandemic), with Prof. Isabelle Ouellet-Moring at the University of Montreal who visited in the summer of 2019, and with other ERC-Starting Grant or other grant holders working with similar data that enable replications across samples (e.g. Dr. Rebecca Pearson at the University of Bristol). CAPE has also enabled a growing number of Bachelor and Master thesis students to gain real research experience and has encouraged several of them to go on to Research Master (Nynke Douma) and PhD programs (Maria Wiertsema, Ayla Pollmann).