Variable Details
Available Studies
ROS, MAP, LATC
Categories
Affect and Personality
Extraversion
Extraversion from NEO Five-Factor Inventory - Sum of 6 items
This variable is only available in ROS, MAP, and LATC.
Extraversion is the tendency to be sociable, active, and optimistic. The variable is measured using 6 items from the NEO Five-Factor Inventory. Participants rate agreement with each item on a 5-point Likert rating scale. Items that are negatively worded are flipped so that higher scores on all individual items indicate greater extraversion. Item scores range from 0 to 4 and are summed to yield a composite score ranging from 0 to 24, where higher score indicates greater extraversion.
Participants are presented the following items:
| Item no. | Item | Flipped (f) |
|---|---|---|
| 1 | I like to have a lot of people around me. | |
| 2 | I laugh easily. | |
| 3 | I really enjoy talking to people. | |
| 4 | I usually prefer to do things alone. | (f) |
| 5 | I am a cheerful, high-spirited person. | |
| 6 | I am a very active person. |
Response choices for each item:
| Response | Response code | Value | Flipped value |
|---|---|---|---|
| Strongly disagree | 1 | 0 | 4 |
| Disagree | 2 | 1 | 3 |
| Neutral | 3 | 2 | 2 |
| Agree | 4 | 3 | 1 |
| Strongly agree | 5 | 4 | 0 |
Note: In preliminary analyses, the Cronbach coefficient alpha, an indicator of internal consistency reliability, was 0.8 for extraversion. These values are comparable to those reported in the normative cohort and indicate adequate levels of internal consistency.