Initial Assessment - the first session where client(s) and therapist discuss the presenting issues and decide on a way forward. The more information the therapist is given, the more successful and timely the intervention will be.
A formulation will be jointly developed and SMART goals agreed (Specific, Measurable, Achievable, Relevant, Timely). Initial assessment also allows for rapport to be built between client(s) and therapist, arguably one of the most important factors of a therapeutic relationship.
Questionnaires - these are chosen depending on the presenting difficulties and are used as a way to measure success; not only for the therapist, but also for the client(s) to see the progress they have made. These are always given at the beginning and end of therapy, and sometimes at other points along the way.
Psychometrics - these are formal assessments that are sometimes used to assess things like cognitive ability, reading and grammatical ability, memory, dementia, learning disabilities, executive function, autism and many others.