“…At the most, Dochy, Moerke, DeCorte, and Segers (2001) presume that, if an examinee reaches a particular answer for an item, which, however, is not offered as an option, then, the higher the examinee’s general assertiveness is, the more he/she uses “none of the other options is right.” This is in accordance with the long-ago study of Sheriffs and Boomer (1954), which showed that low-assertive people try to avoid any decisions about which they are uncertain but suffer from the fear of being punished because of guessing – this supports the hypothesis that examinees would use “I don’t know the solution” rather than guess by chance. On the other hand, an almost equally old study of Alker, Carlson, and Hermann (1969) indicates that examinees with a “nonconformist” personality score higher on achievement tests than others because of fewer skipped items, as a consequence, they would not at all use “I don’t know the solution.” The same conclusion might be true for extraverted, impulsive, and low-anxiety examinees, according to a study of Ávila and Torrubia (2004), who established that this subpopulation gives more incorrect responses in multiple-choice tasks but makes fewer omission errors. Finally, Stoeber and Kersting (2007) showed that “perfectionist” examinees attain higher scores in achievement tests, which suggests that they will not use “I don’t know the solution” but may use “none of the other options is right.”…”