{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/69713"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/69713","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Application of Appropriateness Measurement to a Problem in Adaptive Testing","abstract":"The effects of an initial sequence of 1-5 random responses to 15, 20 and 25-item adaptive tests were examined using simulation. Results indicated that adaptive tests are not robust to initial sequences of misinformative responses. Significant underestimation of ability occurred when as few as the initial 2 responses were random. A likelihood ratio (LR) statistic was used to detect the occurrence of this type of response aberrance. The statistic was evaluated by determining hit rates and false positive rates under several conditions, including: (1) comparison with other appropriateness indices; (2) standardization of the likelihood ratio; and (3) cases where the alternative hypothesis specified in the likelihood ratio was not the actual form of response aberrance. The LR index detected initial sequences of random responses with high levels of accuracy. Other appropriateness indices provided considerably lower detection rates. Possible explanations for these findings are presented and areas for future research are identified.","abstract_html":"The effects of an initial sequence of 1-5 random responses to 15, 20 and 25-item adaptive tests were examined using simulation. Results indicated that adaptive tests are not robust to initial sequences of misinformative responses. Significant underestimation of ability occurred when as few as the initial 2 responses were random. A likelihood ratio (LR) statistic was used to detect the occurrence of this type of response aberrance. The statistic was evaluated by determining hit rates and false positive rates under several conditions, including: (1) comparison with other appropriateness indices; (2) standardization of the likelihood ratio; and (3) cases where the alternative hypothesis specified in the likelihood ratio was not the actual form of response aberrance. The LR index detected initial sequences of random responses with high levels of accuracy. Other appropriateness indices provided considerably lower detection rates. Possible explanations for these findings are presented and areas for future research are identified.","abstract_has_math":false,"creators":["Candell, Gregory Lloyd"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Psychology","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-15T19:46:30Z","date_published":"2014-12-15T19:46:30Z","updated_at":"2026-07-22T22:26:01Z","subjects":["Psychology, Psychometrics"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8908637"],"render_values":[{"text":"(UMI)AAI8908637","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/69713","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Candell, Gregory Lloyd"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-15T19:46:30Z","10000-01-01","1988"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Psychology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Psychology, Psychometrics"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/69713","(UMI)AAI8908637"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The effects of an initial sequence of 1-5 random responses to 15, 20 and 25-item adaptive tests were examined using simulation. Results indicated that adaptive tests are not robust to initial sequences of misinformative responses. Significant underestimation of ability occurred when as few as the initial 2 responses were random. A likelihood ratio (LR) statistic was used to detect the occurrence of this type of response aberrance. The statistic was evaluated by determining hit rates and false positive rates under several conditions, including: (1) comparison with other appropriateness indices; (2) standardization of the likelihood ratio; and (3) cases where the alternative hypothesis specified in the likelihood ratio was not the actual form of response aberrance. The LR index detected initial sequences of random responses with high levels of accuracy. Other appropriateness indices provided considerably lower detection rates. Possible explanations for these findings are presented and areas for future research are identified.","Made available in DSpace on 2014-12-15T19:46:30Z (GMT). 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Significant underestimation of ability occurred when as few as the initial 2 responses were random. A likelihood ratio (LR) statistic was used to detect the occurrence of this type of response aberrance. The statistic was evaluated by determining hit rates and false positive rates under several conditions, including: (1) comparison with other appropriateness indices; (2) standardization of the likelihood ratio; and (3) cases where the alternative hypothesis specified in the likelihood ratio was not the actual form of response aberrance. The LR index detected initial sequences of random responses with high levels of accuracy. Other appropriateness indices provided considerably lower detection rates. Possible explanations for these findings are presented and areas for future research are identified.","Made available in DSpace on 2014-12-15T19:46:30Z (GMT). No. of bitstreams: 1 8908637.pdf: 3323632 bytes, checksum: fe866b9b4ca1986ba6137c9a1412824c (MD5) Previous issue date: 1988","Embargo set by: Seth Robbins for item 69879 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","100 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988."],"dc:identifier":["http://hdl.handle.net/2142/69713","(UMI)AAI8908637"],"dc:subject":["Psychology, Psychometrics"],"dc:title":["Application of Appropriateness Measurement to a Problem in Adaptive Testing"],"dc:type":["text"],"thesis:degree_discipline":["Psychology"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:01Z"}