Ipseus is a groundbreaking psychological software product which allows scientific researchers to explore and assess the complexity of identity processes within a particular area of interest specified by the investigator. With Ipseus, investigators can create a customised assessment tool tailored directly to the sample of participants for study. Ipseus software thereby displays a bespoke 'identity instrument', easily used on screen by participants who are able thereby to appraise themselves and other individuals and agencies that form their biographical milieu. Qualitative aspects of identity are assessed by Ipseus in an integrated manner to quantitative parameters of identity.