A data set on attitudes about the justifiability of abortion in the United States based on World Values Survey responses recorded across six waves (from 1982 to 2011). I assembled this data frame probably around 2014 and routinely use it for in-class illustration about regression, post-estimation simulation, quantities of interest, and how to think about modeling a dependent variable that is on a 1-10 scale, but has curious heaping patterns.



A data frame with 10387 observations on the following 16 variables.


the country code for the United States (a numeric constant)


the survey wave


the survey year corresponding to the survey wave


the justifiability of abortion on a 1-10 scale (1 = never justifiable; 10 = always justifiable)


the age of the respondent in years


a dummy variable that equals 1 if the respondent graduated from college


a dummy variable that equals 1 if the respondent is a woman


a dummy variable that equals 1 if the respondent is unemployed


the ideological self-placement of the respondent on a 1-10 scale (1 = furthest to the left; 10 = furthest to the right)


the respondent's financial satisfaction with his/her life (1 = most dissatisfied; 10 = most satisfied)


the post-materialist index for the respondent (-1 = materialist; 0 = mixed, 1 = post-materialist)


the child autonomy index, which ranges from -2 to 2


can most people be trusted (1) or "(you) never can be too careful" (0)


the importance of God to the respondent on a 1-10 scale (1 = God is not at all important; 10 = God is most important)


would more respect for authority be a welcome change to the United States?


a dummy that equals 1 if the respondent is very proud to be an American.


Data come from the World Values Survey. Note that the college education variable is curiously NA until the third survey wave. The child autonomy index ranges from -2 to 2 where increasing values indicate that children should learn determination and independence over obedience and religious faith. The respectauthority variable is coded where -1 means the respondent believes greater respect for authority in the United States as a future change to the country would be a bad thing. 0 means the respondent doesn't mind such a change. 1 = the respondent believes it would be a good thing.