| Category | Details |
|---|---|
| Description | The Ego Identity Scale (EIS; Rasmussen, 1964) was devised as a technique for investigating Erikson’s concept of ego identity. It consists of 72 statements reflecting the first six psychosocial crisis stages identified by Erikson. Initially, 144 items were developed, with 136 being created specifically for this scale and 8 selected from personality tests. Two preliminary forms of the scale were tested with Navy recruits, and an item analysis was conducted to eliminate weak items. The final form showed high reliability, with correlation coefficients of .849 and .851 using the Spearman-Brown prophecy formula. |
| Author | Rasmussen, John E. |
| Purpose | The purpose of the Ego Identity Scale is to investigate Erikson’s concept of ego identity. |
| Construct | Ego Identity |
| Instrument Type | Rating Scale |
| Reliability | Internal Consistency: Reliability using the Spearman-Brown prophecy formula resulted in correlation coefficients of .849 and .851. |
| Validity | Content Validity: The scale was developed in alignment with Erikson’s criteria for psychosocial crisis resolution, and the statements were unanimously validated by two judges. |
| Factor Analysis | No factor analysis indicated |
| Administration Method | Paper |
| Language | English |
| Test Items Available | No. To obtain the test items, you are advised to contact the author or publisher directly. |
| Test Year | 1964 |
| Format | Responses are made using an agree-disagree format. |
| Population Group | Human |
| Population Details | Sample: Recruits at a U.S. Naval Training Center |
| Keywords | Ego Identity Scale; Identity Diffusion; Personality Development |
| Source | Rasmussen, J. E. (1964). Relationship of ego identity to psychosocial effectiveness. Psychological Reports, 15(3), 815–825. https://doi.org/10.2466/pr0.1964.15.3.815 |
| Classification | Personality |
| Permissions | Contact Publisher |
| Commercial | No |
| Fee | No |
Cite this article
Mohammed looti (2026). Ego Identity Scale (EIS). PSYCHOLOGICAL SCALES. Retrieved from https://scales.arabpsychology.com/s/ego-identity-scale-eis/
Mohammed looti. "Ego Identity Scale (EIS)." PSYCHOLOGICAL SCALES, 4 Apr. 2026, https://scales.arabpsychology.com/s/ego-identity-scale-eis/.
Mohammed looti. "Ego Identity Scale (EIS)." PSYCHOLOGICAL SCALES, 2026. https://scales.arabpsychology.com/s/ego-identity-scale-eis/.
Mohammed looti (2026) 'Ego Identity Scale (EIS)', PSYCHOLOGICAL SCALES. Available at: https://scales.arabpsychology.com/s/ego-identity-scale-eis/.
[1] Mohammed looti, "Ego Identity Scale (EIS)," PSYCHOLOGICAL SCALES, vol. X, no. Y, ص Z-Z, April, 2026.
Mohammed looti. Ego Identity Scale (EIS). PSYCHOLOGICAL SCALES. 2026;vol(issue):pages.