Table 6.

Means, standard deviations, and confidence intervals for normative measures

	Raven’s Advanced Progressive Matrices	Symmetry Span Task
Experiment 1
Bilingual	9.27 (2.69) [7.77, 10.77]	26.27 (8.55) [22.46, 30.08]
Monolingual	8.27 (2.99) [6.77, 9.77]	21.60 (5.54) [17.79, 25.41]
Experiment 2
Bilingual	7.83 (3.29) [6.07, 9.60]	28.00 (11.15) [22.95, 33.05]
Monolingual	9.42 (4.03) [7.70, 11.14]	29.89 (9.95) [24.98, 34.81]
Experiment 3
Bilingual	8.31 (3.57) [6.50, 10.13]	26.13 (10.12) [20.93, 31.32]
Monolingual	7.36 (3.59) [5.81, 8.91]	25.41 (10.32) [20.98, 29.84]

Standard deviations are in parentheses, 95% confidence intervals are shown in brackets.