i think that the activity theory has more independence than the disengagement theory as a person is more active than needing help (disengagement theory)
Theory: an explanation of an event that has been supported by consistent, repeated experimental results and has therefore been accepted by most scientists. Model: A verbal, mathematical, or visual...
A hypothesis attempts to answer questions by putting forth a plausible explanation that has yet to be rigorously tested. A theory, on the other hand, has already undergone extensive testing by...