Wetin be di difference between simple reaction time and choice reaction time?

Di figures for simple task dey inside summary of di sample; di choice-task age groups and averages dey for Table 2. Di studies use same research setting but dem use different things to show and different task demands. To subtract di overall averages na just descriptive calculation, e no be clean measure of one mental processing stage. Woods et al., 2015 Woods et al., 2015

Wetin change when dem add choice?

For simple task, participant fit prepare di same movement before each signal. Choice task need make person identify wetin show and connect am to one action. Classic experiments by Hick and Hyman link response time to di information wey dey among di options, including how many possible signals dey and their chances. Hick, 1952 Hyman, 1953

Na why person fit respond quick to light but need more time to choose di correct move for game. No get contradiction: di tasks dey ask different questions. Laboratory choice task still control which options dey available; real-life game or driving situation no reduce to one universal reaction-time benchmark. Woods et al., 2015

How person suppose understand age and sex?

Di age-group values above come from sample wey dem check one time, no be say dem follow di same people for decades. Dem show di task context, but dem no fit predict how much one person's score go change every year. Dem no prove browser percentiles for each age or fixed adjustment for sex too. To know those ones, dem need use di same procedure and suitable norms. Woods et al., 2015 Woods et al., 2015

Score include mistakes as well as speed

If person guess quick, e fit lower response time but increase mistakes. So choice task gatz explain wetin count as correct response, no response, or response wey happen too early. You no fit understand average time from correct responses without checking whether accuracy change. Di Woods choice study report different results instead of treating latency as complete picture of performance. Woods et al., 2015

Very slow or fast responses and how dem handle missed trials fit change di summary too. How dem handle unusual results na part of how dem define score; two websites wey use different rules fit produce different values from similar behaviour. Ratcliff, 1993

Why online results no match di table

Screens, input devices and browser systems add their own delays and timing changes. Experiments show say fine-grained software timestamps no remove those differences. If dem compare phone choice task with mouse simple task, di result mix response selection with equipment and movement differences. Anwyl-Irvine et al., 2020 Bridges et al., 2020

For useful informal comparison, use di same equipment and read di instructions for both tasks. Expect difference wey depend on di task; no treat any of di numbers as general speed rating. Research on reliability still warn say strong average task effect no automatically mean say one person's difference score go remain stable as personal trait. Hedge et al., 2017

Practice fit make di connection between signal and response feel more familiar. That fit be real learning of di task without showing general improvement for decision-making. Di useful scientific result na better performance on procedure wey dem clearly define, while dem still keep its errors and conditions. Woods et al., 2015 Hick, 1952