neighbors, and for these people a disfavored group member's presence in the same workplace may be more objectionable than that member's residence on the same street would be. Likewise, especially for younger generations, whose members are on average more geographically mobile than were their elders at a comparable age, a significant number of persons may interact more with their friends, co-workers, and/or neighbors than with their siblings-, parents-, and/or children-in-law, with the effect that a respondent may envision him/herself being less bothered on a daily basis by having a disfavored group member as a relative-in-law than s/he would by having that individual as a co-worker or neighbor. In addition, a respondent who prefers not to associate with members of certain groups but respects others' freedom of association may accept a close relative's choice of a disfavored group member as a spouse even when that respondent would refuse to consider choosing the group member to be one of his or her own close friends. Third, the assumption of an equal difference in quantitative social distance between the various options complicates any effort at generalization and/or comparison, whether in intrapersonal or interpersonal comparisons and whether for time-specific, longitudinal, or intervalic surveys. For example, if a respondent considers the difference in social distance between "3" and "4" to be more or less than the difference between "5" and "6," it would likely be inaccurate to infer that a disfavored group at level "6" is twice as distant as a disfavored group at level "3," and even if two respondents agree on the quantitative level of distance associated with each option, it would be inaccurate to average a "2" response from one and a "6" response from the other as a "4." This difficulty is compounded when different individuals assign different absolute levels of distance to, and with them different absolute amounts of difference between, given options in the scale. Bogardus’s conceptualization is not the only one in the sociological literature. Several sociologists have pointed out that social distance can also be conceptualized on the basis of other parameters such as the frequency of interaction between different groups or the normative distinctions in a society about who should be considered an "insider" or "outsider." The scale has been criticized as oversimplified because social interactions and attitudes in close familial or friendship-type relationships may for at least some persons be qualitatively different from social interactions