Table 5.
Summary Statistics for Adult Learning Curve Estimates based on data in Supplemental Table.
| Group (µM) | A | 95% CI for A | T | 95% CI for T | Significant? | Trial # Criterion Reacheda |
|
|---|---|---|---|---|---|---|---|
| MeHg | |||||||
| .00 | .31* | (.23,.39) | 9.1* | (5.7,12.6) | yes | 12 | |
| .01 | .10* | (.05,.16) | 2.5 | (−2.3,7.3) | no | ---- | |
| .03 | ---- | ---- | 40.5* | (14.9,66.2) | no | ---- | |
| .06 | .01 | (−.10,.12) | 5.8 | (−130.8,142.4) | no | ---- | |
| .10 | ---- | ---- | 36.7* | (21.6,51.7) | no | ---- | |
| .30 | ---- | ---- | 38.0* | (19.7,56.3) | no | ---- | |
| SeMet | |||||||
| .00 | .30* | (.20,.40) | 6.3* | (2.3,10.3) | yes | 12 | |
| .01 | .15* | (.09,.22) | 1.7 | (−1.5,4.9) | no | ---- | |
| .03 | .40* | (.02,.78) | 21.2* | (10.8,31.5) | yes# | 25 | |
| .06 | .17* | (.11,.23) | 7.8 | (3.1,12.6) | no | ---- | |
| .10 | .18* | (.08,.29) | 8.7* | (1.1,16.3) | yes | ---- | |
| .30 | .12 | (.06,.18) | 2.6 | (−1.8,6.9) | no | ---- | |
| MeHg+SeMet | |||||||
| .03 | .03 | .15 | (−.04,.34) | 5.8 | (−.4,32.1) | no | ---- |
| .03 | .06 | .08 | (−.02,.19) | 9.2 | (.7.9,26.3) | no | ---- |
| .03 | .10 | .15 | (−.03,.33) | 13.3 | (−2.5,19.2) | no | ---- |
| .03 | .30 | .20* | (.06,.33) | 12.6* | (3.0,22.2) | yes | ---- |
| .10 | .03 | .05 | (−.16,.27) | 13.4 | (−43.3,70.1) | no | ---- |
| .10 | .06 | .16 | (−.42,.74) | 21.9 | (−17.6,61.4) | no | ---- |
| .10 | .10 | .13 | (−.22,.48) | 19.4 | (−12.4,51.3) | no | ---- |
| .10 | .30 | .10* | (.05,.16) | none | ---- | no | ---- |
A = total amount of learning
T = # trials to achieve half of total learning
*
a parameter estimate is statistically significant
a
mean trial # criterion reached estimated by mathematical estimation of curve (see text)
#
criterion reached but a trial number outside the range of control 95% confidence interval for T.