Table 2.
Average correlation |
||||||
---|---|---|---|---|---|---|
Candidate indicators | Cohen’s d | Skew | Kurtosis | Full sample | Nontaxon | Taxon |
Number of days smoked in the past 30 days | 1.28 | −1.11 | −0.49 | .381 | .236 | −.013 |
Age of first cigarette | 0.89 | −1.38 | 11.00 | .121 | −.090 | −.111 |
Latency to first cigarettea | 1.37 | 0.23 | −1.41 | .386 | .224 | .100 |
Average no. cigarettesa | 1.43 | −0.11 | −0.29 | .422 | .286 | .090 |
Nicotine Dependence Symptom Scale | ||||||
Drivea | 1.66 | 0.11 | −0.98 | .453 | .298 | .132 |
Priority | 0.59 | 1.75 | 3.15 | .215 | .096 | .093 |
Continuitya | 1.55 | 0.09 | −1.12 | .425 | .277 | .093 |
Stereotypy | 0.40 | 0.29 | −0.43 | .158 | .120 | −.025 |
Tolerancea | 1.31 | 0.63 | −0.70 | .391 | .249 | .102 |
Note. Because these analyses required complete data sets, participants with any missing data were deleted, and the sample size was attenuated here relative to the sample used in the taxometric analyses. Average correlation = mean interindicator correlation for the full sample and the provisional nontaxon and taxon samples.
Indicators used in taxometric analyses.