Affordable Access

Access to the full text

The CogBIAS longitudinal study of adolescence: cohort profile and stability and change in measures across three waves

  • Booth, Charlotte1
  • Songco, Annabel1
  • Parsons, Sam1
  • Heathcote, Lauren Charlotte2
  • Fox, Elaine1
  • 1 University of Oxford, Anna Watts Building Radcliffe Observatory Quarte, Department of Experimental Psychology, Woodstock Road, Oxford, OX2 6GG, UK , Oxford (United Kingdom)
  • 2 Stanford University School of Medicine, Department of Anesthesiology, Perioperative, and Pain Medicine, 1070 Arastradero Road, Palo Alto, CA, 94304, USA , Palo Alto (United States)
Published Article
BMC Psychology
BioMed Central
Publication Date
Nov 15, 2019
DOI: 10.1186/s40359-019-0342-8
Springer Nature


BackgroundAdolescence is a time of considerable social, cognitive, and physiological development. It reflects a period of heightened risk for the onset of mental health problems, as well as heightened opportunity for flourishing and resilience. The CogBIAS Longitudinal Study (CogBIAS-L-S) aims to investigate psychological development during adolescence.MethodsWe present the cohort profile of the sample (N = 504) across three waves of data collection, when participants were approximately 13, 14.5, and 16 years of age. Further, we present descriptive statistics for all of the psychological variables assessed including (a) the self-report mood measures, (b) the other self-report measures, and (c) the behavioural measures. Differential and normative stability were investigated for each variable, in order to assess (i) measurement reliability (internal consistency), (ii) the stability of individual differences (intra-class correlations), and (iii) whether any adolescent-typical developmental changes occurred (multilevel growth curve models).ResultsMeasurement reliability was good for the self-report measures (> .70), but lower for the behavioural measures (between .00 and .78). Differential stability was substantial, as individual differences were largely maintained across waves. Although, stability was lower for the behavioural measures. Some adolescent-typical normative changes were observed, reflected by (i) worsening mood, (ii) increasing impulsivity, and (iii) improvements in executive functions.ConclusionsThe stability of individual differences was substantial across most variables, supporting classical test theory. Some normative changes were observed that reflected adolescent-typical development. Although, normative changes were relatively small compared to the stability of individual differences. The development of stable psychological characteristics during this period highlights a potential intervention window in early adolescence.

Report this publication


Seen <100 times