Dimensions of Identity Development Scale (DIDS) Test

How the Scales are Structured
Who Usually Takes This Test?
See How You Compare
Below is a preview of how scores are typically distributed across each scale.
Example Questions From the Test
- Strongly disagree
- Somewhat disagree
- Neither agree nor disagree
- Somewhat agree
- Strongly agree
- Strongly disagree
- Disagree
- Neither agree nor disagree
- Agree
- Strongly agree
- Strongly disagree
- Somewhat disagree
- Neither agree nor disagree
- Somewhat agree
- Strongly agree
Dimensions of Identity Development Scale (DIDS) Test - Description and methodology of the test
People reviewing their commitments, future direction, and uncertainty may use the Dimensions of Identity Development Scale (DIDS) Test to organize several identity processes at once. The profile is useful for anyone who wants to compare felt commitment with exploration, reflection, and doubt rather than receive a single personality label. As an identity development test, it offers a focused snapshot of how current choices relate to personal values and circumstances.
What This Assessment Explores
Identity concerns choices, commitments, alternatives, values, and uncertainty. This identity development questionnaire supports self-reflection, not personality typing.
The dimensions are:
- In-Depth Exploration (5-25) evaluates commitments against values and circumstances: Low deep inquiry 5-11; Moderate deep inquiry 12-18; High deep inquiry 19-25.
- Identification With Commitment (5-25) links decisions to identity amid circumstances: Low identification 5-12; Moderate identification 13-18; High identification 19-25.
- Ruminative Exploration (5-25) captures doubt, searching, and difficulty settling: Low 5-11; Moderate 12-18; High 19-25.
- Exploration in Breadth (5-25) covers alternatives and information; breadth and depth vary: Low breadth search 5-11; Moderate breadth search 12-18; High breadth search 19-25.
- Commitment Making (5-25) covers decisions and adherence; certainty changes: Low commitment acceptance 5-11; Moderate commitment acceptance 12-18; High commitment acceptance 19-25.
Methodology and Scientific Basis
Responses use a five-point agreement format, from Strongly disagree to Strongly agree, with a neutral midpoint. The questionnaire reports five separate displayed scale scores, each ranging from 5-25, producing a profile rather than one total identity score.
Its conceptual source is the published Dimensions of Identity Development Scale (DIDS), described by Luyckx et al. (2008). This online questionnaire is conceptually consistent with that instrument, but the cited studies do not establish that it is the published instrument or that their samples, norms, and measurement findings validate this version. Earlier Luyckx et al. (2006) work links commitment with exploration, while the 2008 study distinguishes ruminative exploration as a separate process. Mastrotheodoros and Motti-Stefanidi (2017) examined longitudinal measurement invariance for the DIDS in Greek adolescents.
Interpret the pattern across scales: broad exploration can coexist with commitment, whereas high rumination may signal difficulty settling on a direction. The displayed bands are descriptive catalogue categories, not universal clinical cutoffs. Scores can also vary with current circumstances, self-awareness, and willingness to report uncertainty, so the result is best considered alongside lived experience rather than as a diagnosis.
- Luyckx, K., Schwartz, S. J., Berzonsky, M. D., Soenens, B., Vansteenkiste, M., Smits, I., & Goossens, L. (2008). Capturing ruminative exploration: Extending the four-dimensional model of identity formation in late adolescence. Journal of Research in Personality, 42(1), 58-82. 10.1016/j.jrp.2007.04.004
- Luyckx, K., Goossens, L., Soenens, B., & Beyers, W. (2006). Unpacking commitment and exploration: Preliminary validation of an integrative model of late adolescent identity formation. Journal of Adolescence, 29(3), 361-378. 10.1016/j.adolescence.2005.03.008
- Mastrotheodoros, S., & Motti-Stefanidi, F. (2017). Dimensions of Identity Development Scale (DIDS): A test of longitudinal measurement invariance in Greek adolescents. European Journal of Developmental Psychology, 14(5), 605-617. 10.1080/17405629.2016.1241175
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