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Temperament differences between infants who do and do not complete laboratory testing
Insights
Infant temperament influences study completion. Noncompleters showed difficult temperaments, unlike completers, suggesting temperament impacts infant research validity.
Area of Science:
- Developmental Psychology
- Infant Behavior Research
Background:
- Infant temperament is crucial for understanding developmental trajectories.
- Variability in infant participation can affect research outcomes.
Purpose of the Study:
- To investigate temperament differences between infants who complete and do not complete a visual habituation study.
- To explore the relationship between infant temperament and study attrition in research.
Main Methods:
- Compared temperament profiles of 24 Caucasian infants (16 completers, 8 noncompleters) in a visual habituation study.
- Utilized maternal ratings from the Infant Temperament Questionnaire Revised (ITQ-R).
Main Results:
- Noncompleters exhibited more arrhythmic, withdrawing, and intense temperaments compared to completers.
- Noncompleters were less distractible and more likely classified as 'difficult' babies.
- Completers were more often classified as 'easy' babies.
Conclusions:
- Infant temperament, particularly 'difficult' traits, is associated with noncompletion in research studies.
- Accurate descriptions of participants, including completers and noncompleters, enhance the external validity of infant research.
- Consideration of infant temperament may improve participant retention in developmental studies.
Abstract:
Temperament differences were examined in a group of 24 Caucasian infants classified as completers (n = 16) and noncompleters (n = 8) on the basis of their performance in a visual habituation study. Maternal ratings of infant temperament based upon the Infant Temperament Questionnaire Revised revealed that noncompleters, in comparison with completers, were found to be more: arrhythmic, withdrawing, and intense, and less distractible. A composite measure of difficultness found the completers more likely to be classified as "easy" while the noncompleters were often classified as "difficult" babies. The findings suggest that to increase the external validity of infant research it may be beneficial to include more exact descriptions both of Ss who complete and those who fail to complete experiments.