<P> (p): the perceived power of the control factor </P> <P> W': empirically derived weight / coefficient </P> <P> To the extent that it is an accurate reflection of actual behavioral control, perceived behavioral control can, together with intention, be used to predict behavior . </P> <Dl> <Dd> BC = (W_1) BI + (W_2) PBC (Σ (c) (p)) </Dd> </Dl>

The theory of planned behaviors (tpb) is a revision of which theory