Which factor described as a vivid and real stimulus is more likely to change behavior?

• A. Association
• B. Recency
• C. Intensity
• D. Primacy

Answer: (C)

A stimulus that is vivid and real tends to change behavior because its strength grabs attention and raises arousal, making people more likely to respond in a modified way. When a cue is intense or highly salient, it stands out from the surrounding environment, so it prompts quicker recognition and a more decisive action. This is why intensity is a powerful predictor of behavior change: a strong, real stimulus is more likely to trigger the desired response than cues that are weaker or less noticeable.

The other factors describe different things. Association is about linking events or responses, which can influence behavior over time but doesn’t directly reflect how strong a single stimulus is. Recency and primacy relate to how information is remembered based on its position in a sequence, affecting memory rather than the immediate likelihood of changing behavior in response to a stimulus. A vivid, real stimulus—an example being a loud alarm or a bright warning light—illustrates how salient cues drive more immediate and noticeable behavioral changes.