ISA concepts and their meanings: What are the primary ISA concepts, what do they mean, and how does one interpret findings when they are used in empirical investigations?
'Identity instruments' for large-scale investigations: With the ISA emphasis on individual customisation of 'identity instruments', how would it be possible to carry out large scale investigations dealing with hundreds or thousands of participants?
Comparability over time [stasis/flux issue]: How is one able to compare analyses of identity structure from one phase in time to another for a person when the person's customised 'identity instrument' is elaborated to take into account newly encountered people and events, and ways of thinking about them (i.e., when the content of an identity instrument differs at the later stage compared with the earlier one)?
Comparability from person to person [emic/etic issue]: How does one achieve comparability of identity parameters from person to person when analyses of identity structure are customised for the person (i.e., when contents of 'identity instruments' vary across persons)?
Validity: What are the bases for validity of ISA parameters?
Reliability: How is the reliability of ISA parameters ascertained?
Cultural imperatives: How are differing cultural imperatives incorporated while achieving comparability across cultures?
