Maturation is the threat to internal validity in the study here. This is because the participants will be grown up.
- This is an internal threat to the particular participant. The evaluation results may be explained by the probability that participants' own mental or physical changes took place.
- For instance, key physical traits like eyesight, hearing, taste, and even memory may deteriorate more quickly as people age. This might have a detrimental effect on how well they do in an experiment.
- These illustrations imply long-lasting adjustments. The effects of maturity can also be momentary, as in the cases of exhaustion, boredom, warming up, and hunger.
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