Skip to main content
. 2012 May 29;7(5):e37580. doi: 10.1371/journal.pone.0037580

Table 2. Statistics for task difficulty (easy, medium), noise (regular, noisy) and time-order (preferred, nonpreferred).

Factor Dependent variable F-statistic p-value Partial eta squared (η2) Text reference
Task difficulty d′ F 1,59 = 15.114 p = .0003* 0.20 {2a}
Noise F 1,59 = 5.739 p = .0198* 0.09 {2b}
Time-order F 1,59 = 78.310 p<.0001* 0.57 {2c}
Task difficulty * Noise F 1,59 = 0.013 p = .9086 0
Task difficulty * Time-order F 1,59 = 2.479 p = .1207 0.04
Noise * Time-order F 1,59 = 0.271 p = .6044 0
Task difficulty RT F 1,59 = 3.292 p = .0747 0.05 {2f}
Noise F 1,59 = 0.528 p = .4704 0.01 {2d}
Time-order F 1,59 = 10.035 p = .0024* 0.15 {2e}
Task difficulty * Noise F 1,59 = 0.076 p = .7838 0
Task difficulty * Time-order F 1,59 = 0.229 p = .6342 0
Noise * Time-order F 1,59 = 2.753 p = .1024 0.04

D-prime (d′) was used to assess accuracy and response time (RT) was used to assess speed.