Data from: Aggressive jumping spiders make quicker decisions for preferred prey but not at the cost of accuracy

There has been an increasing interest in consistent interindividual
differences in behavior (i.e., personality) in recent years. However,
consistent interindividual differences in cognitive styles remain largely
unexplored. Individual differences in cognitive styles are hypothesized to
be functionally related to differences in personality types. It is assumed
that proactive individuals make faster decisions at the expense of
accuracy (i.e., the speed–accuracy trade-offs hypothesis). Here, we
investigated the relationship between personality and speed–accuracy
trade-off using Portia labiata, a specialized spider-eating jumping spider
that exhibits excellent cognitive ability. We first established consistent
individual differences in aggressiveness and decision-making in P.
labiata. We then tested whether individual differences in aggressiveness
could predict how fast and accurately P. labiata makes a prey-choice
decision (a large vs. a small orb-web spider). We demonstrated that P.
labiata exhibited individual differences not only in aggressiveness, but
also in the speed of prey-choice decisions but not in the choices.
Importantly, we found that aggressiveness was not related to the choice of
the prey, but it predicted the speed of prey-choice decision: aggressive
individuals were faster to make choices than docile ones but both chose
large spiders as preferred prey. This suggests a lack of an association
between a speed–accuracy trade-off and variation in personality types of
P. labiata.