Table 2.
Principal components analysis (PCA) of acute AMPH-related subjective-effect measures (N=97)
| Factor1 Positive Mood | Factor2 Arousal | Factor3 Drug High | |
|---|---|---|---|
| DEQ | |||
| Feel | −.280 | −.025 | .905 |
| Like | .383 | .089 | .45l |
| High | .123 | −.040 | .808 |
| More | .382 | −.089 | .45l |
| ARCI | |||
| A | .092 | .592 | .325 |
| BG | −.034 | .862 | .119 |
| MBG | .464 | .327 | .249 |
| PCAG | −.098 | −.842 | .113 |
| POMS | |||
| Arousal | .367 | .634 | −.094 |
| Elation | .983 | −.012 | −.066 |
| Fatigue | .127 | −.865 | .145 |
| Friendliness | .94l | −.104 | −.031 |
| Pos. Mood | .890 | .053 | −.004 |
| Vigor | .780 | .110 | .010 |
DEQ = Drug Effects Questionnaire
ARCI = Addiction Research Center Inventory (A=Amphetamine scale; BG=Benzedrine Group; MBG= Morphine-Benzedrine Group; PCAG= Pentobarbital-Chlorpromazine-Alcohol Group)
POMS = Profile of Mood States Questionnaire
Bolded factor loadings indicate the items that were used to calculate factor scores.
Subjective-effect scales that were not significantly altered by AMPH were not included in the PCA.