Benchmark-based strategies in whole number line estimation

Bibliographic Data

ID5267791
AuthorsDominique Peeters (0000-0003-0483-3707, Centre for Instructional Psychology and Technology KU Leuven Belgium), Lieven Verschaffel (0000-0002-5283-6470, Centre for Instructional Psychology and Technology KU Leuven Belgium), Tine Degrande (0000-0001-8685-8910), Koen Luwel (0000-0002-4517-8617, Centre for Instructional Psychology and Technology KU Leuven Belgium)
Year2017
Volume108
Issue4
Pages668-686
Publication date2017-11-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueBritish Journal of Psychology (JOURNAL)
Journal identifiersISSN: 0007-1269 • E-ISSN: 2044-8295
PublisherWiley (PUBLISHER • GB)
DOI10.1111/bjop.12233
OpenAlexW2519333271
LanguageEN
Citations received7
References cited52

In this study, we used verbal protocols to identify whether adults spontaneously apply quartile-based strategies or whether they need additional external support to use these strategies when solving a 0-1,000 number line estimation (NLE) task. Participants were assigned to one of three conditions based on the number of external benchmarks provided on the number line. In the bounded condition only the origin and endpoint were indicated, the mid-point condition included an additional external benchmark at 50%, and in the quartile condition three additional external benchmarks at 25%, 50%, and 75% were specified. Firstly, participants in the bounded condition reported to spontaneously apply quartile-based strategies to calibrate their estimates. Moreover, participants frequently relied on the external benchmarks for creating internal benchmarks at the mid-point, quartiles, and even octiles of the number line. Secondly, overall estimation accuracy improved as the number of external benchmarks increased, and target numbers close to external benchmarks were estimated more accurately and with less variability. Thirdly, the use of a larger variety in benchmark-based strategies was positively related to NLE accuracy. In summary, this study provides evidence that the NLE task induces more sophisticated strategy use in participants than initially anticipated

Algorithm · Benchmark (surveying) · Econometrics · Economics · Estimation · Geography · Line (geometry) · Statistics · Algorithms and Data Compression · Artificial Intelligence · Computer Science · Mathematics · Vehicle License Plate Recognition · Wireless Communication Networks Research

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