Construct validity of two identity status measures: the EIPQ and the EOM-EIS-II.

Area of Science:

• Psychology
• Developmental Psychology
• Identity Formation

Background:

• Identity formation is a critical developmental task.
• Accurate measurement of identity statuses is essential for research.
• Existing measures may have varying construct validities.

Purpose of the Study:

• To examine the construct validity of the Ego Identity Process Questionnaire (EIPQ) and the Extended Objective Measure of Ego Identity Status II (EOM-EIS-II).
• To compare how these measures relate to psychological agency, assessed by the Multi-Measure Agentic Personality Scale (MAPS).

Main Methods:

• The study employed correlational analyses to assess the relationship between identity status classifications and psychological agency.
• Participants' identity statuses were measured using the EIPQ and EOM-EIS-II.
• Psychological agency was measured using the MAPS.

Main Results:

• The EIPQ successfully differentiated between diffused/moratorium and foreclosed/achieved identity statuses based on psychological agency.
• The EOM-EIS-II differentiated the achieved identity status from the other three statuses.
• Both measures showed some relationship with psychological agency, but differed in their discriminative power.

Conclusions:

• The EIPQ is recommended for studies requiring contrasts between distinct identity statuses.
• The EOM-EIS-II is more suitable for research utilizing continuous measures of identity status.
• Further research may explore the nuanced construct validity of identity measures in relation to other psychological constructs.