Imagine you're a researcher studying how sleep affects mood. To explore the connection, you would look at two key "variables": sleep (how much someone gets) and mood (how happy or irritable they feel) ...

This is a preview. Log in through your library . Abstract Much recent research on leadership has concerned moderator (contingency) variables. This research has yielded equivocal and/or conflicting ...

Health programs that use social and related data obtained through surveys or other methods need to distinguish among so-called independent variables. Three groups of independent variables are (a) ...

Citations: Rusticus, Tjomme O., David Larcker. 2010. On the Use of Instrumental Variables in Accounting Research. Journal of Accounting and Economics. (3)186.

A growing share of polling is conducted with online opt-in samples. 1 This trend has raised some concern within the industry because, while low participation rates pose a challenge for all surveys, ...