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Updated: Feb 1, 2026

A Modified Trier Social Stress Test for Vulnerable Mexican American Adolescents
Published on: July 10, 2017
Validation of vulnerability markers of dysfunctions in the socioemotional development of infants
Daniel Ignacio da Silva1, Débora Falleiros de Mello2, Renata Ferreira Takahashi3
1Universidade de Santo Amaro, São Paulo, SP, Brazil.
Objectives:
to validate the vulnerability markers of dysfunctions in the socioemotional development of infants.
Methods:
study with a sequential exploratory mixed-method design. The vulnerability markers elaborated in the qualitative phase were analyzed by experts in the quantitative phase using the Delphi technique with a minimum consensus of 70%. Seventeen judges answered the questionnaire in the first round of analysis and 11 answered in the second round.
Results:
in the first round, two markers did not reach minimum consensus: the presence of instability in family relationships (66%) and delinquency and/or drug abuse by parents/caregivers (65%). In the second round, all markers were validated, with more than 90% agreement in most of the attributes, and reached the minimum consensus of 73%.
Conclusion:
the eight vulnerability markers reached the minimum consensus for validation, and a relevant instrument for infant care can be developed after assessing the reliability and clinically validating these markers.
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Reliability and Validity

