In science, a variable is something that can be changed, measured or controlled in an experiment. Scientists look at variables to understand how they affect things. A variable is any one of the things ...

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) ...

Contrôler les variables dans les systèmes sociaux - Une approche de modélisation structurelle. En sciences sociales, lors de l’étude de relations causales, il n’est en général pas évident de choisir ...

We submit our recent systemic democratic peace research to the control variable doctrine of James Lee Ray, as codified in his 2003 treatise. In particular, we seek to determine whether international ...