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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: Cognition. 2014 Mar 19;131(3):373–403. doi: 10.1016/j.cognition.2014.01.007

Table 4.

Mixed-effects modeling results for all dependent measures* – working memory capacity (Sentence Span). Reliable effects are in bold.

Region 1 Region 2 Region 3 Region 4
Est. (β) SE t p Est. (β) SE t p Est. (β) SE t p Est. (β) SE t p
(Intercept) 806.002 37.606 21.433 0.000 748.021 32.122 23.287 0.000 632.545 22.618 27.966 0.000 633.073 25.830 24.509 0.000
Load −80.825 17.955 −4.502 0.000 −101.866 17.397 −5.855 0.000 −78.209 13.227 −5.913 0.000 −92.363 12.069 −7.653 0.000
Interference −30.277 17.949 −1.687 0.092 −4.421 17.394 −0.254 0.799 −23.701 13.229 −1.792 0.073 10.034 12.066 0.832 0.406
WMC 120.411 38.329 3.142 0.002 100.716 29.982 3.359 0.001 63.964 22.057 2.900 0.004 84.731 23.383 3.624 0.000
Load × Interference −0.488 35.912 −0.014 0.989 13.516 34.798 0.388 0.698 47.925 26.457 1.811 0.070 48.400 24.134 2.005 0.045
Load × WMC 44.294 18.604 2.381 0.017 21.658 18.075 1.198 0.231 51.228 13.677 3.746 0.000 21.946 12.518 1.753 0.080
Interference × WMC −1.113 18.592 −0.060 0.952 −10.663 18.045 −0.591 0.555 −15.855 13.663 −1.160 0.246 −3.054 12.495 −0.244 0.807
Load × Interference × WMC −10.672 37.209 −0.287 0.774 −12.455 36.129 −0.345 0.730 −31.231 27.360 −1.141 0.254 10.804 25.026 0.432 0.666
Region 5 (critical region) Region 6 (spillover region) Recall (strict) Comprehension Accuracy
Est. (β) SE t p Est. (β) SE t p Est. (β) SE Z p Est. (β) SE Z p
(Intercept) 495.270 14.872 33.303 0.000 969.463 45.380 21.363 0.000 0.71 0.17 4.16 .0000 1.333 0.184 7.240 0.000
Load −60.948 7.720 −7.894 0.000 −213.664 21.212 −10.073 0.000 −0.577 0.111 −5.196 0.000
Interference 12.283 7.721 1.591 0.112 18.236 21.213 0.860 0.390 0.11 0.13 0.82 0.4112 −0.179 0.111 −1.605 0.108
WMC 51.141 15.243 3.355 0.001 147.083 40.093 3.669 0.000 0.39 0.15 2.56 0.0104 0.626 0.091 6.909 0.000
Load × Interference −10.200 15.444 −0.660 0.509 39.436 42.431 0.929 0.353 −0.321 0.221 −1.452 0.146
Load × WMC 15.454 7.975 1.938 0.053 18.109 21.957 0.825 0.409 0.009 0.114 0.076 0.940
Interference × WMC 3.906 7.976 0.490 0.624 44.797 21.901 2.045 0.041 0.06 0.15 0.38 0.7065 0.173 0.115 1.507 0.132
Load × Interference × WMC −2.364 15.955 −0.148 0.882 −24.174 43.901 −0.551 0.582 0.500 0.228 2.198 0.028
*

Absent values for Recall reflect the fact that the task was completed only in the Memory Load conditions, when the memory items were present