Testing a tripartite model: I. Evaluating the convergent and discriminant validity of anxiety and depression symptom scales

Article Abstract:

A tripartite model enables the grouping of depression symptoms to three types, namely, the indications of somatic tension and arousal that are specific to anxiety, nonspecific symptoms of general stress and symptoms of anhedonia and low Positive Affect unique to depression. The results from this model are consistent with the MASQ Anxious Arousal and Anhedonic Depression scales. Thus, an understanding of the several symptoms enables a comprehension of the depression phenomena.

Observations, Identification and classification

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Constructing validity: basic issues in objective scale development

Article Abstract:

The main aim of a scale development is to provide a valid measure for a construct. An important role can be played by factor analysis in guaranteeing the unidimensionality and discriminant validity of scales. In the choice scale items, the aim is more for unidimensionality, than for internal consistency. Theoretical principles can be used to optimize the construct validity of psychological measurement scales and subscales.

Methods, Psychological tests, Psychometrics, Latent variables, Scale analysis (Psychology)

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Testing a tripartite model: II. Exploring the symptom structure of anxiety and depression in student, adult, and patient samples

Article Abstract:

A study of a tripartite model of depression and anxiety by separate factor analysis of three students, one adult and a patient revealed symptom structures to be similar for diverse groups of people. The three symptom groups proposed by the model are non-specific general distress, somatic arousal related to anxiety and symptoms of anhedonia pertaining to depression.

Research, Anxiety

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