The magnitude of the main effect observed here (a 5-deg
increase in orientation error) is comparable to a previously
reported cost of 5 deg for monitoring the orientations of
two objects rather than one (Howard & Holcombe, 2008).
Howard and Holcombe measured the cost of splitting attention
between two targets rather than allocating full attention
to one target. In the experiments reported here,
bounces of the nonqueried target likely reduced attention
to the queried target further, causing attention to favor the
nonqueried target. The cost for reporting a nonfavored target
out of two targets appears comparable to the cost of
splitting attention between two targets versus allocating
full attention to one