Which one of the following is not a core/basic skill in the field of psychological services?

The correct option is Leadership skills.

In the field of psychological services, core or basic skills refer to the fundamental competencies required to directly interact with, assess, and help clients. These skills are essential for the primary practice of psychology and counselling. Let us break down the given options to understand why leadership skills are not considered a core/basic skill in this specific context:

1. Communication skills: This is a fundamental core skill. Psychologists must actively listen, interpret verbal and non-verbal cues, and express empathy and understanding clearly to build rapport with clients.
2. Psychological testing skills: This is a specialized core skill unique to psychological services. It involves administering, scoring, and interpreting standardized tests to assess a client's cognitive, emotional, or behavioral functioning.
3. Counselling skills: This is another core skill, which involves therapeutic techniques, active listening, guidance, and interventions designed to help clients resolve personal, social, or psychological challenges.

In contrast, Leadership skills are general professional or managerial skills. While they can be highly beneficial for administrative roles, running a private practice, or heading a clinical department, they are not a prerequisite, basic, or core clinical skill required to deliver direct psychological services to a client.