Sechrist and Weil (2017) identify a number of strengths and limitations of their study. One of these limitations is that the authors did not collect data from the victim’s perspective. “Are victims no longer calling because the offenders have actually desisted from IPDV? Or is the victim being prevented from calling by the offender through force, coercion, or otherwise?” (19). This limitation can best be classified as a threat to the study’s ______.
a. internal validity
b. external validity
c. authenticity
d. generalizability
e. measurement validity