Variable Details
Available Studies
ROS, MAP, MARS, Clinical Core, LATC
Categories
Affect and Personality
Neuroticism
Neuroticism from NEO Five-Factor Inventory - Sum of 12 items
Neuroticism indicates proneness to experiencing psychological distress. The variable is measured using 12 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 neuroticism. Item scores range from 0 to 4 and are summed to yield a composite score ranging from 0 to 48, where higher score indicates greater neuroticism.
Participants are presented the following items:
| Item no. | Item | Flipped (f) |
|---|---|---|
| 1 | I often feel inferior to others. | |
| 2 | When I'm under a great deal of stress, sometimes I feel like I'm going to pieces. | |
| 3 | I often feel tense and jittery. | |
| 4 | Sometimes I feel completely worthless. | |
| 5 | I often get angry at the way people treat me. | |
| 6 | Too often, when things go wrong, I get discouraged and feel like giving up. | |
| 7 | I often feel helpless and want someone else to solve my problems. | |
| 8 | At times I have been so ashamed I just want to hide. | |
| 9 | I am not a worrier. | (f) |
| 10 | I rarely feel lonely or blue. | (f) |
| 11 | I rarely feel fearful or anxious. | (f) |
| 12 | I am seldom sad or depressed. | (f) |
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 |
Notes: In preliminary analysis, the Cronbach coefficient alpha, an indicator of internal consistency reliability was 0.8 for neuroticism. These values are comparable to those reported in the normative cohort and indicate adequate levels of internal consistency.
ROS and MARS items are collected at baseline. MAP personality data collection started after initial baselines were completed, so only about 50% were collected at baseline. Approximately 20% were completed at follow-up 1, and 20% completed at follow-up 2.