AP PSYCHOLOGY

Detailed explanation-1: -If research results can be replicated, it means they are more likely to be correct. Replication is important in science so scientists can “check their work.” The result of an investigation is not likely to be well accepted unless the investigation is repeated many times and the same result is always obtained.

Detailed explanation-2: -Results may change over different trials or different conditions. Therefore, it is important that the experiment itself should be repeatable. A repeatable experiment should yield the same results when conducted by different people at different times and preferably-but not necessarily-under similar conditions.

Detailed explanation-3: -Repeating an experiment more than once helps determine if the data was a fluke, or represents the normal case. It helps guard against jumping to conclusions without enough evidence. The number of repeats depends on many factors, including the spread of the data and the availability of resources.

Detailed explanation-4: -For most types of experiment, there is an unstated requirement that the work be reproducible, at least once, in an independent experiment, with a strong preference for reproducibility in at least three experiments.

Detailed explanation-5: -The accuracy of a measurement is dependent on the quality of the measuring apparatus and the skill of the scientist involved. For data to be considered reliable, any variation in values must be small. Repeating a scientific investigation makes it more reliable.