Question 71

A feature search would be used when the green X is presented on a sheet with many green Os.

In this scenario, a feature search is utilized when the target (green X) is distinguished by a specific feature (color) from distractors (green Os). This allows the participant to efficiently identify the target based solely on the salient feature without the need for complex processing.

A) If the green color of X and red color of O are combined correctly.

This option is incorrect because it suggests a scenario where color combinations are relevant to the search. A feature search relies on identifying a target based on its unique characteristics rather than combinations of features, which is not applicable here.

B) If the green X is presented on a sheet with many green Os.

This option is correct as it describes a situation where the participant can quickly locate the green X among multiple green Os. The distinctive color of the target allows for a straightforward feature search, as the participant can focus on color to differentiate between the target and distractors.

C) If the green color of X becomes incorrectly combined with a red O.

This option is incorrect because it implies a scenario where the target is confused with a distractor due to color combination. A feature search is most effective when the target is clearly distinguishable from the distractors, which is not the case if combinations lead to confusion.

D) If the green X is presented on a sheet with many green and red Xs and Os.

This option is incorrect as it introduces multiple targets and distractors of varying colors. Such a scenario complicates the search process, making it less about a straightforward feature search and more about conjunction search, where multiple features must be considered to identify the target.

Conclusion

Option B is definitively the correct answer as it accurately represents a scenario where the participant can effectively engage in a feature search by relying on the distinguishing color of the green X against green Os. The other options either misinterpret the conditions under which a feature search is applicable or introduce unnecessary complexity that detracts from the efficiency of the search process.