The quickest way to study changes over the life span is through cross-sectional research. Cross-sectional studies (also known as Cross-sectional analysis) form a class of research methods that involve observation of some subset of a population of items all at the same time, in which, groups can be compared at different ages with respect of independent variables, such as IQ and memory ...
Source: en.wikipedia.org/wiki/Cross-sectional_research
Chat with our AI personalities