Ken is а newly licensed mentаl heаlth prоfessiоnal, wоrking with adults and couples. One of his clients requested ADHD assessment. The client thinks that his difficulties with concentration and attention are due to self-diagnosed ADHD and that he would benefit from a stimulant medication. Ken has no expertise or training in the assessment of ADHD but he believes that he can handle it. After he researches what is involved in a typical ADHD assessment, Ken goes forward with administering the tests. What standard of APA Code of Ethics is he violating? Describing the theoretical orientation to the client. Using appropriate therapeutic interventions. Building a therapeutic relationship. Considering limits of competence.