Psychology MCAT Practice Exam 2026 – Complete All-in-One Guide to Ensure Your Success!

Question: 1 / 400

In signal detection theory, what error is characterized as a false positive?

Type II error

Type I error

In signal detection theory, a false positive occurs when a signal is incorrectly identified as being present when it is not. This is specifically labeled as a Type I error. In this context, a Type I error signifies the failure to distinguish between noise and a signal, leading to a scenario where the individual mistakenly believes they have detected a signal.

This concept is foundational in understanding how judgments are made in uncertain environments, and it emphasizes the importance of threshold settings for detection. When a person sets their threshold for detection too low, they may become overly sensitive to potential signals, resulting in more frequent false alarms—hence, the occurrence of a false positive.

Understanding this error is crucial for interpreting results in various fields, including psychology and medicine, as it can have significant implications for decision-making processes.

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Detection error

Missed detection

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