Step 1: Understanding the Concept:
Psychological tests can be classified by their administration format.
Step 2: Detailed Explanation:
1. Individual Tests:
- Administration: Given by one examiner to one examinee.
- Observation: Allows the examiner to observe the subject's mood, anxiety, and problem-solving style closely.
- Example: Wechsler Adult Intelligence Scale (WAIS) or the Stanford-Binet Intelligence Scale.
2. Group Tests:
- Administration: Can be administered to a large number of people at once, often using paper-and-pencil or computer formats.
- Efficiency: Highly cost-effective and saves time, but offers no chance for clinical observation.
- Example: Army Alpha Test or SAT (Scholastic Assessment Test).
Step 3: Final Answer:
Individual tests provide rich clinical data but are expensive, whereas group tests are efficient but less personal.