Table 1.

Proportion correct and estimated items Mean (and SD) in working memory by condition in Experiment 1

Probe	Attention	Answer	1st Presented	6–8 Years	8–10 Years	10–13 Years	Adults
Proportion Correct
Auditory	Unimodal	Different	Auditory	.82 (.20)	.91 (.12)	.94 (.07)	.95 (.11)
Auditory	Unimodal	Same	Auditory	.73 (.20)	.84 (.12)	.9 (.11)	.94 (.08)
Auditory	Bimodal	Different	Auditory	.83 (.18)	.86 (.13)	.92 (.1)	.93 (.16)
Auditory	Bimodal	Same	Auditory	.69 (.22)	.80 (.14)	.87 (.14)	.91 (.14)
Auditory	Unimodal	Different	Visual	.84 (.18)	.92 (.12)	.97 (.06)	.94 (.11)
Auditory	Unimodal	Same	Visual	.74 (.21)	.83 (.14)	.91 (.10)	.93 (.11)
Auditory	Bimodal	Different	Visual	.76 (.23)	.93 (.11)	.92 (.11)	.91 (.14)
Auditory	Bimodal	Same	Visual	.66 (.20)	.78 (.14)	.86 (.12)	.86 (.19)
Visual	Unimodal	Different	Auditory	.72 (.16)	.82 (.17)	.80 (.14)	.89 (.12)
Visual	Unimodal	Same	Auditory	.60 (.19)	.64 (.22)	.71 (.18)	.79 (.15)
Visual	Bimodal	Different	Auditory	.65 (.19)	.78 (.18)	.79 (.16)	.77 (.16)
Visual	Bimodal	Same	Auditory	.50 (.22)	.52 (.22)	.60 (.19)	.79 (.16)
Visual	Unimodal	Different	Visual	.68 (.18)	.75 (.18)	.80 (.16)	.87 (.13)
Visual	Unimodal	Same	Visual	.54 (.19)	.49 (.22)	.62 (.22)	.81 (.13)
Visual	Bimodal	Different	Visual	.65 (.22)	.73 (.13)	.75 (.17)	.80 (.17)
Visual	Bimodal	Same	Visual	.41 (.18)	.48 (.18)	.53 (.16)	.70 (.13)
Estimated Items in Working Memory
Auditory	Unimodal	n/a	Auditory	3.14 (1.59)	4.11 (0.72)	4.43 (0.6)	4.65 (0.56)
Auditory	Bimodal	n/a	Auditory	3.03 (1.52)	3.80 (0.87)	4.26 (0.81)	4.39 (1.09)
Auditory	Unimodal	n/a	Visual	3.30 (1.59)	3.98 (0.90)	4.52 (0.55)	4.57 (0.71)
Auditory	Bimodal	n/a	Visual	2.63 (1.52)	3.73 (1.03)	4.22 (0.70)	4.21 (1.20)
Visual	Unimodal	n/a	Auditory	2.28 (1.21)	2.72 (1.30)	3.12 (1.14)	3.71 (1.11)
Visual	Bimodal	n/a	Auditory	1.32 (1.27)	1.99 (1.25)	2.47 (1.17)	3.50 (1.33)
Visual	Unimodal	n/a	Visual	1.75 (1.27)	1.70 (1.42)	2.62 (1.34)	3.83 (0.91)
Visual	Bimodal	n/a	Visual	0.65 (0.85)	1.41 (1.23)	1.85 (1.05)	2.98 (1.06)