Investment Model Scale.
IMS
Rusbult's Investment Model of relationship commitment: Commitment Level plus its three bases - Satisfaction Level, Quality of Alternatives, and Investment Size
- Length and format
- ~22 global items (5 per construct + commitment) plus facet items. 0-8 agreement (do not agree at all - agree completely) (self-report questionnaire)
- Licence
- open with attribution
Licence classification is a research judgement by the catalogue’s authors, not legal advice, and it can be out of date. Confirm terms with the copyright holder or publisher before using an instrument, especially for commercial use.
- Reference
- Rusbult, C. E., Martz, J. M., & Agnew, C. R. (1998). The Investment Model Scale. Personal Relationships, 5(4), 357-391.
More in Developmental, child, family and couple
- ABAS-3 - Adaptive Behavior Assessment System, Third Edition
varies by form (~232-241 items per age-band form). copyrighted - commercial.
- AAI - Adult Attachment Interview
~20 interview questions (semistructured protocol); coded on 9-point state-of-mind and experience scales. copyrighted - author permission.
- AAS / RAAS - Adult Attachment Scale (and Revised AAS)
18 items. public-domain / open.
- ATQ - Adult Temperament Questionnaire
77 (short form); a long form (~249 items) also exists. copyrighted - author permission.
- ASQ-3 - Ages and Stages Questionnaires, Third Edition
30 items per age interval (21 age-specific questionnaires), 6 per domain. copyrighted - commercial.
- APQ - Alabama Parenting Questionnaire
42 (full); 9 (APQ-9 short). copyrighted - author permission.
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