Table IV.
Correlations Between Behavioral and Physiological Measures
| Typical |
FXS |
Combined |
||||
|---|---|---|---|---|---|---|
| Behavioral Measure | IBIa | Change IBI | IBIa | Change IBI | IBIa | Change IBI |
| Reactivity scale | ||||||
| r | −.08 | .02 | −.08 | .19 | −.11 | .14 |
| p | .68 | .92 | .72 | .38 | .47 | .36 |
| n | 27 | 27 | 23 | 23 | 49 | 49 |
| Latency to react | ||||||
| r | .14 | −.19 | .01 | −.30 | .06 | −.26 |
| p | .49 | .35 | .96 | .16 | .67 | .08 |
| n | 26 | 26 | 23 | 23 | 49 | 49 |
| Latency to recover | ||||||
| r | −.35 | .25 | .05 | .19 | −.09 | .18 |
| p | .10 | .25 | .84 | .40 | .57 | .23 |
| n | 24 | 24 | 22 | 22 | 46 | 46 |
Note. FXS = fragile X syndrome; IBI = interbeat interval.
aLatency to shortest IBI.