A researcher is examining whether aggressive behavior demonstrated in the early years can predict school drop?out rates. He asks teachers to complete behavioral rating scales for 20 children in Grade 9. He returns a year later and has the teachers complete the same form, for the same 20 children. The same procedure is repeated until they graduate or drop out. This is an example of

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This is an example of a longitudinal study because it involves observing the same participants over a period of time to examine the development of aggressive behavior and its potential impact on school drop-out rates.

A Researcher Is Examining Whether Aggressive Behavior Demonstrated in the Early