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Psychometric Properties

Validity

The construct validity of the FTT was examined in two ways: (a) Internal validity: through the application of factor analysis and the comparison between FTT factor scores and defense mechanisms, and (b) External validity: through comparisons with structured questionnaires of personality dimensions and disorders such as the Child Behavior Checklist for parents (CBCL), the Beck Youth Inventories (BYI) and the Aggression Questionnaire (AQ).

For further information regarding validity please refer to the respective chapter of the manual.

Reliability

The retest reliabilities range from moderate to high for the majority of variables.

For further information regarding reliability please refer to the respective chapter of the manual.