Complex sentence: Scores must be interpreted in the context of the person's educational and other background, and the particular circumstances; for example, a person highly depressed or in great pain will not be expected to do well on many tests of mental ability.
Split into simpler sentences: Scores must be interpreted in the context of the person's educational and other background, and the particular circumstances. For example, a person highly depressed or in great pain is not expected to do well on many tests of mental ability.