adequate anchor points or reference locations from
which to determine spatial accessibility to resources are both
the activity place just before the practice of the behavior of
interest and the activity place that follows it (Thierry et al.,
submitted for publication). For example, if a person makes a stop
at a fast-food restaurant (as the outcome of interest) just before
arriving to his/her workplace, what matters is the spatial
accessibility to fast-food outlets from the workplace. However,
in specific cases, either or both the activity place just before and
the one just after the behavioral outcome may be inadequate
anchors or reference locations from which to determine accessibility,
for example if the participant makes a stop at a