However, an examination of a few social cognitive theories produces no theoretical rationale that would support any sustained positive influence of pedometers in the absence of some other conditional factor, such as a behavioural goal or a social support system. We believe that once people determine how many steps their usual routes and daily activity typically amounts to, that the pedometer will no longer be used. We based our contentions on two theories: self efficacy theory (Bandura, 1986;1997) and self-determination theory (Deci & Ryan, 2000).