Organisational Diagnosis should be a collaborative process, involving both company staff and external consultants (such as organisational psychologists) in collecting pertinent data, analysing them and drawing conclusions for action planning and intervention. Diagnosis may be aimed at discovering the causes of specific problems, or it may be directed at assessing the organisations or department to find areas for future development and devise interventions for solving problems and improving organisation effectiveness.

OrgPsych provides diagnosis via Voice-Staff Climate Survey, structured interviews or assessment tools such as the MBTI , GENOS and LPI