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Development of the Central Dogma Concept Inventory (CDCI) Assessment Tool

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Title: Development of the Central Dogma Concept Inventory (CDCI) Assessment Tool
Language: English
Authors: Newman, Dina L., Snyder, Christopher W., Fisk, J. Nick, Wright, L. Kate
Source: CBE - Life Sciences Education. Jun 2016 15(2).
Availability: American Society for Cell Biology. 8120 Woodmont Avenue Suite 750, Bethesda, MD 20814-2762. Tel: 301-347-9300; Fax: 301-347-9310; e-mail: ascbinfo@ascb.org; Website: http://www.ascb.org
Peer Reviewed: Y
Page Count: 14
Publication Date: 2016
Document Type: Journal Articles
Reports - Research
Education Level: Higher Education
Postsecondary Education
Descriptors: Beliefs, Science Education, Science Instruction, Teacher Effectiveness, Molecular Biology, College Science, Biology, Pretests Posttests, Thinking Skills, STEM Education, Undergraduate Students, Teaching Methods, Cytology, Genetics, Statistical Analysis, Observation, Interviews
DOI: 10.1187/cbe.15-06-0124
ISSN: 1931-7913
Abstract: Scientific teaching requires scientifically constructed, field-tested instruments to accurately evaluate student thinking and gauge teacher effectiveness. We have developed a 23-question, multiple select--format assessment of student understanding of the essential concepts of the central dogma of molecular biology that is appropriate for all levels of undergraduate biology. Questions for the Central Dogma Concept Inventory (CDCI) tool were developed and iteratively revised based on student language and review by experts. The ability of the CDCI to discriminate between levels of understanding of the central dogma is supported by field testing (N = 54), and large-scale beta testing (N = 1733). Performance on the assessment increased with experience in biology; scores covered a broad range and showed no ceiling effect, even with senior biology majors, and pre/posttesting of a single class focused on the central dogma showed significant improvement. The multiple-select format reduces the chances of correct answers by random guessing, allows students at different levels to exhibit the extent of their knowledge, and provides deeper insight into the complexity of student thinking on each theme. To date, the CDCI is the first tool dedicated to measuring student thinking about the central dogma of molecular biology, and version 5 is ready to use.
Abstractor: As Provided
Number of References: 69
Entry Date: 2016
Accession Number: EJ1096932
Database: ERIC
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  Data: <searchLink fieldCode="AR" term="%22Newman%2C+Dina+L%2E%22">Newman, Dina L.</searchLink><br /><searchLink fieldCode="AR" term="%22Snyder%2C+Christopher+W%2E%22">Snyder, Christopher W.</searchLink><br /><searchLink fieldCode="AR" term="%22Fisk%2C+J%2E+Nick%22">Fisk, J. Nick</searchLink><br /><searchLink fieldCode="AR" term="%22Wright%2C+L%2E+Kate%22">Wright, L. Kate</searchLink>
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  Data: <searchLink fieldCode="SO" term="%22CBE+-+Life+Sciences+Education%22"><i>CBE - Life Sciences Education</i></searchLink>. Jun 2016 15(2).
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  Data: American Society for Cell Biology. 8120 Woodmont Avenue Suite 750, Bethesda, MD 20814-2762. Tel: 301-347-9300; Fax: 301-347-9310; e-mail: ascbinfo@ascb.org; Website: http://www.ascb.org
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  Data: Scientific teaching requires scientifically constructed, field-tested instruments to accurately evaluate student thinking and gauge teacher effectiveness. We have developed a 23-question, multiple select--format assessment of student understanding of the essential concepts of the central dogma of molecular biology that is appropriate for all levels of undergraduate biology. Questions for the Central Dogma Concept Inventory (CDCI) tool were developed and iteratively revised based on student language and review by experts. The ability of the CDCI to discriminate between levels of understanding of the central dogma is supported by field testing (N = 54), and large-scale beta testing (N = 1733). Performance on the assessment increased with experience in biology; scores covered a broad range and showed no ceiling effect, even with senior biology majors, and pre/posttesting of a single class focused on the central dogma showed significant improvement. The multiple-select format reduces the chances of correct answers by random guessing, allows students at different levels to exhibit the extent of their knowledge, and provides deeper insight into the complexity of student thinking on each theme. To date, the CDCI is the first tool dedicated to measuring student thinking about the central dogma of molecular biology, and version 5 is ready to use.
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