The document discusses several psychological assessment tools, including the Child Behavior Checklist (CBCL), Symptom Checklist-90-Revised (SCL-90-R), and Beck Depression Inventory (BDI). It provides an example case of Jose, a 17-year old student referred for depression. Tests administered included the BDI, CBCL, and SCL-90-R, which revealed significant elevations in depressed mood, anxiety, and withdrawal. Psychological states can be assessed through physiological measures like neuroimaging, polygraphs, and biofeedback equipment. Using multiple assessment methods provides important information for diagnosis and treatment planning.