| Name of scale | Authors | N of items | N of factors | Names of factors | Brief description of measure |
| Identification with a psychological group (IDPG) | Mael & Tetrick (1992) | 10 | 2 | Shared experiences Shared characteristics | Measure of identification with a psychological group or organization, defined as the perception of sharing experiences of a focal group and sharing characteristics of the group’s members |
| Multidimensional Organisational Commitment Scale | Allen & Meyer (1990) | 24 | 3 | Affective commitment Continuance commitment Normative commitment | Measures positive feelings of identification with and attachment to the organization, the extent of commitment by virtue of the costs of leaving the organization, and the feelings of obligation to remain with the organisation |
| Cognitive Organisational Identification (Self-Categorisation) Scale | Bergami & Bagozzi (2000) | 2 | 1 | Organisational identification | Scale consists of a largely visual item and a verbal item. The former asks respondents to directly express their felt degree of overlap between their own identity and the organisation’s identity |
| *Collective Self Esteem Scale (CSES) | Luhtanen & Crocker (1992) | 16 | 4 | Membership esteem Public collective self-esteem Private collective self-esteem Importance to identity | Evaluation of one’s social identity: scale was constructed to assess individual differences in collective, rather than personal, self-esteem |
| Organisational Identification Questionnaire (OIQ) | Cheney (1982) | 25 | 3 | Loyalty Similarity Membership | This measure is used to gauge the degree to which someone identifies with their organisation along three factors (loyalty, similarity, membership) |
| Organisational Commitment Questionnaire (OCQ) | Porter, Mowday, & Steers (1974) | 9 | 1 | Organisational commitment | Global measure used to gauge the degree to which someone is committed to their organization |
| *The 2-component “Group Identification” measure | Karasawa (1991) | 7 | 2 | Identification with group Identification with group members | Initially used originally to examine Japanese school students’ identification with their school. Karasawa’s measure differentiates between identification with the organisation, and identification with the organisation members |
| *The 3-component SI measure | Ellemers, Kortekaas, & Ouwerkerk (1999) | 10 | 3 | Social self-categorisation Group commitment Group self-esteem | Self-categorisation, commitment to the group and group self-esteem as related but distinct aspects of social identity |
| *The 6-item measure of organizational identification | Mael & Ashforth (1992) | 6 | 1 | Organizational identification | Popular organisational identification scale based on high inter-item reliability and ease of administration. Scale has been criticized for focusing on the affective aspects of identification at the expense of the cognitive |
| *The 4-item global identification measure | Doosje et al. (1995) | 4 | 1 | Social identity | A basic scale measuring identification with certain categories. Originally used for Dutch students and their identification as “psychology students” but like other social ID measures, it can easily be adapted for other organisational settings by substituting the name of the relevant organisation. As this measure is short and global, it is suitable as a measure of both social ID and social ID salience |
| *The 3-component SI measure | Hinkle, Taylor, Fox-Cardamone, & Crook (1989) | 7 | 3 | Emotional identification Individual/group opposition Cognitive aspects of identification | This scale was devised as an adaptation from Brown Condor, Mathews, Wade, and Williams (1986) group ID measure. The authors identified subscales which were differentially associated with specific forms of intergroup behavior |