Perhaps nonqueried target bounces attracted attention away
from the queried target for long enough to cause the trace to decay substantially further before
the report was made.The ability of changes in motion direction to attract attention may play an
important role in our awareness of situations with multiple moving objects. Motion changes can
signal important new information about the world, about the intentions of other creatures, and
about forces acting on our immediate surroundings. In the modern world, awareness of motion
changes may be critical in situations such as playing on the sports field, walking or driving on a
busy street, and monitoring closed-circuit television.