For each of the following operational definitions, decide whether you consider it to be a valid measure. Explain why or why not. Decide whether you consider it to be a reliable measure. Explain why or...

For each of the following operational definitions, decide whether you consider it to be a valid measure. Explain why or why not. Decide whether you consider it to be a reliable measure. Explain why or why not.

 A researcher defines academic motivation in terms of the number of minutes a student spends working on class-related material outside of class during a 24-hour period fro