ERIC Number: ED405216
Record Type: RIE
Publication Date: 1997-Mar
Reference Count: N/A
A Model of Desired Performance in Phylogenetic Tree Construction for Teaching Evolution.
Brewer, Steven D.
This research paper examines phylogenetic tree construction-a form of problem solving in biology-by studying the strategies and heuristics used by experts. One result of the research is the development of a model of desired performance for phylogenetic tree construction. A detailed description of the model and the sample problems which illustrate each step are included. The study involved expert phylogenetic systematists (N=9) who used think-aloud protocols as they problem solved. A discussion of the use of the model which was developed during this study is also included. It points out that the model can be useful to students to help them interpret the instructor's behavior and to guide their own problem solving. The model by itself would not be sufficient to teach effective problem solving to students. The tree construction problems used in the study allow students to become familiar with the processes used by scientists to explain evolutionary history. (DDR)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the Annual Meeting of the National Association for Research in Science Teaching (70th, Oak Brook, IL, March 21-24, 1997).