8. Ramon fills out a personality questionnaire designed to assess self-esteem and gets a mean score of 4 on a scale of 1 to 5. A month later, he fills it out again and gets the same score. At the very least, what quality can we be cer- tain this questionnaire possesses? a. Validity b. Reliability c. Accuracy d. Variability 9. What was the operational definition of self-esteem in the above question? a. Ramon's mean score on the questionnaire b. The discrepancy between Ramon's score at each testing period c. How long it took Ramon to fill out the questionnaire d. Ramon's willingness to fill out the questionnaire Int