Description

The Daily Interaction Questionnaire (DIQ-111) is a psychometric instrument designed to assess how partners perceive and evaluate each other’s daily behaviours within a romantic relationship.

The questionnaire consists of 111 statements describing one partner’s perception of the other partner’s behaviour during a specific period of time. The items are organised into six main categories: social activities, positive interaction, negative interaction, negative sexual interaction, positive sexual interaction, and additional forms of behaviour. Each statement evaluates the frequency with which a specific behaviour occurs.

Objective

The main objective of the DIQ-111 is to examine the quality and characteristics of interpersonal interaction within a couple by recording how one partner experiences and perceives the behaviours of the other.

The instrument focuses on everyday communication patterns and provides information about positive and negative aspects of relationship functioning.

Structure and Dimensions

The questionnaire evaluates six behavioural domains:

Social Activities: Includes behaviours related to shared activities, social participation, and everyday interaction.

Positive Interaction: Assesses supportive, affectionate, and constructive behaviours that strengthen the relationship.

Negative Interaction: Evaluates conflictual, critical, or unpleasant behaviours that may negatively influence relationship quality.

Negative Sexual Interaction: Examines problematic or negative experiences related to sexual interaction between partners.

Positive Sexual Interaction: Assesses positive experiences and behaviours related to sexual intimacy.

Other Forms of Action: Includes additional behavioural aspects relevant to daily interaction within the relationship.

Scoring Method

Responses are recorded using a five-point frequency scale, ranging from:

Never

to

Always.

Scores can be calculated either as a total interaction score or separately for each behavioural category. The results allow the identification of patterns of positive and negative interaction between partners.

Higher scores in positive interaction categories indicate stronger adaptive relationship behaviours, whereas higher scores in negative interaction categories indicate greater frequency of problematic behaviours.

Validity

The validity of the DIQ-111 has been examined through pilot applications and comparisons with other measures related to couple communication and relationship quality.

The thematic organisation of the questionnaire is based on research findings concerning daily communication patterns and interaction processes among couples with and without relationship difficulties.

Reliability

The reliability of the DIQ-111 has been evaluated through internal consistency analyses using Cronbach’s alpha coefficients for the individual behavioural categories.

The questionnaire demonstrates high internal consistency, while test–retest reliability has also been confirmed in studies involving repeated administration over time.

Data Analysis and Use

The analysis of DIQ-111 data includes the calculation of:

mean scores,

standard deviations,

scores for individual behavioural categories,

correlations with indicators of relationship quality and psychological functioning.

The results can be used in couple counselling, relationship therapy, and research studies investigating daily communication patterns and relationship dynamics.

Applications

The Daily Interaction Questionnaire can be applied in:

couple and family counselling,

marital therapy,

relationship research,

studies of communication patterns,

assessment of relationship functioning.

It is particularly useful for understanding how everyday behaviours contribute to relationship satisfaction, conflict, and interpersonal adjustment.

References

Haintz, E. (1995). A new therapeutic approach to communication between spouses with marital problems. Doctoral dissertation, Department of Psychology, Aristotle University of Thessaloniki.

Haintz, E. (1997). A different therapeutic approach to communication exercises between spouses with marital problems. Psychologia, 3, 86–105.