Understanding Verbal vs. Non-Verbal Intelligence Tests

Intelligence tests can be broadly categorized into verbal and non-verbal types. Verbal tests assess cognitive abilities using language, requiring participants to understand, interpret, and respond using words. Non-verbal tests, conversely, rely on visual stimuli, patterns, or performance tasks that do not require language comprehension or production.

Analyzing the Options

Let's examine each option to determine if it's a verbal or non-verbal test of intelligence:

• (a) Test of general information: This test measures the knowledge an individual has acquired through their environment and education. It typically involves answering questions verbally or in writing, making it a verbal test.
• (b) Comprehension: This component assesses an individual's ability to understand social situations, common sense, and abstract concepts. It usually involves responding to questions about hypothetical scenarios or interpreting meanings, classifying it as a verbal test.
• (c) Digit span: This test measures short-term memory capacity. Participants are asked to repeat a sequence of digits presented aurally, either forwards or backwards. While it uses numbers, the presentation and recall are primarily auditory and verbal, often considered a component of verbal ability in intelligence assessments.
• (d) Digit symbol: This is a task where individuals must quickly match symbols to corresponding numbers based on a provided key. It requires visual perception, attention, and psychomotor speed (the speed of performing physical actions). Since it relies heavily on visual-spatial skills and manual dexterity rather than language, it is considered a non-verbal test.

Identifying the Non-Verbal Test

Based on the analysis above:

• Tests of general information and comprehension are clearly verbal.
• Digit span, while using numbers, involves verbal recall and is generally classified under verbal skills.
• Digit symbol distinctly relies on visual processing and manual response, making it non-verbal.

Therefore, the Digit symbol test is the one that is not a verbal test of intelligence.

Conclusion

The question asks to identify the option that is NOT a verbal test of intelligence. Among the choices provided, the Digit symbol test is the only one that fits this description.