Content validity is the extent to which an empirical measurement reflects a specific domain of content. Here, a research must assemble the fully elaborated content of a domain, athleticism for instance, and bring together all relevant content, such as strength, endurance, agility, coordination, strategic understanding of the game and its rules, experience in the sport, enthusiasm for the sport, etc. Then the research must strategically sample from these areas, items that can be brought together to assess athleticism. Keep in mind that some areas may be more important or complex than others, knowing that some areas will be over sampled. For instance, people who do well on a test of athleticism are stronger than people who do poorly on athleticism.
Criterion validity focuses on the relationship between the test and related future outcome.
For instance, the SAT test is supposed to give people an idea of future college performance. Construct validity takes into account the theoretical context of a measure, the bigger picture, or the extent to which a test is related to other measures consistent with the phenomenon being measured. And let us further say that the relationship between gender and athleticism is a theoretical aspect of our research where we say that high levels of estrogen are a fundamental aspect of success in any team experience.