| 1 Reserved, unsociable | Outgoing, sociable | |
| 2 Less intelligent, concrete | More intelligent, abstract | |
| 3 Affected by feelings | Emotionally stable | |
| 4 Submissive, humble | Dominant, assertive | |
| 5 Serious | Happy-go-lucky | |
| 6 Expedient | Conscientious | |
| 7 Timid | Venturesome | |
| 8 Tough-minded | Sensitive | |
| 9 Trusting | Suspicious | |
| 10 Practical | Imaginative | |
| 11 Forthright | Shrewd, calculating | |
| 12 Self-assured | Apprehensive | |
| 13 Conservative | Experimenting | |
| 14 Group-dependent | Self-sufficient | |
| 15 Undisciplined | Controlled | |
| 16 Relaxed | Tense | |
| Raymond Cattell believed that personality could be described in terms of 16 source traits, or basic personality factors. Each factor represents a dimension that ranges between two extremes. | ||