From: Do nonphysical punishments reduce antisocial behavior more than spanking? a comparison using the strongest previous causal evidence against spanking
Corrective Action
Degrees of Freedom
Mean Sum of Squares
F Value
Spanking
3
798.4
2.87*
Grounding
893.1
3.20*
Privilege removal
435.4
1.53
Sending to room
632.6
2.20a
Psychotherapy
1
1116.5
3.93*