Assessment procedures were developed to identify those naval officers who would be most effective in providing career guidance services to enlisted personnel. Several tests were administered to officers performing career counseling duties. These tests included a cognitive battery, the Navy Basic Test Battery (BTB); as well as the Guilford Tests of Social Intelligence, Comrey Personality Scales (CPS), Strong Vocational Interest Blank, Dole Ideal Counselor Adjective Check List (ICAC), and the Biographical and Attitudinal Inventory (BAI). Counselees' perceptions of the counselors' interpersonal competence were used as the criterion data in constructing scoring keys, which were used in addition to the standard keys for these tests. The relationships of age and cognitive aptitude to effective counseling were also investigated. The counselees generally rated the counseling services favorably, and their evaluations were found to be useful for validation of the selection instruments. Neither counselor pay grade nor BTB aptitude scores were related to job effectiveness, and age was important only to the youngest counselees. The validities of the cognitive battery and the instruments scored with the standard keys ranged from 0 to .20; of the constructed keys, .30 to .60. The best selectors were the CPS, and secondly, the BAI-ICAC composite. (Author/GDC)