Using multiple measures of personality in conjunction with clinical interviews and other testing, a psycho-diagnostic assessment can provide diagnostic clarity for complex neurological or psychiatric disorders. Often, disorders such as schizophrenia, bipolar disorder, obsessive-compulsive disorder, and others, can overlap in presentation with elements of other psychological or neurological symptoms. Psycho-diagnostic assessments can help refine diagnoses based on psychometric and clinical data, leading to more targeted treatment and behavioural interventions for those in need.