Table 1 Statistical tests for experiment 1. Chi squared tests were used for within-individual analyses, and t-tests were used for group level analyses. Effect sizes for the chi-square tests were calculated using the formula, Cramer’s V, \(\:V=sqrt(X^2/(n*df\left)\right)\), where X2 is the chi-squared statistic, n is the number of trials and df is the degrees of freedom. Effect sizes for t-tests were calculated using the formula, Cohen’s d = (sample mean – expected mean)/sample standard deviation.
From: Abstract rule learning and generalization in human and nonhuman primates
Phase 1.1 | Phase 1.2 | ||
|---|---|---|---|
Color (final block of 200 trials) | Color trials (final 500 trials) | Shape probes (500 trials) | |
Jasper | X2 = 294.19 p < 0.0001 V = 0.86 | X2 = 582.68 p < 0.0001 V = 0.76 | X2 = 0.060 p = 0.970 V = 0.09 |
Zelda | X2 = 183.61 p < 0.0001 V = 0.68 | X2 = 465.56 p < 0.0001 V = 0.68 | X2 = 0.655 p = 0.721 V = 0.03 |
Cassie | X2 = 135.64 p < 0.0001 V = 0.58 | X2 = 426.06 p < 0.0001 V = 0.65 | X2 = 0.299 p = 0.861 V = 0.02 |
Zoe | X2 = 184.21 p < 0.0001 V = 0.68 | X2 = 406.01 p < 0.0001 V = 0.64 | X2 = 0.439 p = 0.803 V = 0.02 |
Lapis | X2 = 227.77 p < 0.0001 V = 0.76 | X2 = 662.64 p < 0.0001 V = 0.81 | X2 = 0.088 p = 0.957 V = 0.01 |
Cleo | X2 = 264.07 p < 0.0001 V = 0.81 | X2 = 550.61 p < 0.0001 V = 0.74 | X2 = 0.080 p = 0.961 V = 0.01 |
Overall | t5 = 24.44 p < 0.0001 d = 7.16 | t5 = 24.85 p < 0.0001 d = 10.2 | t5 = −0.132 p = 0.901 d = −0.07 |
