Research Data

Dataset for: Children’s mixed-rounding strategy use in computational estimation

Author(s) / Creator(s)

Poloczek, Sebastian
Hammerstein, Svenja
Büttner, Gerhard

Other kind(s) of contributor

Goethe University Frankfurt

Abstract / Description

Dataset for: Poloczek, Hammerstein & Büttner (2022). Children’s mixed-rounding strategy use in computational estimation. Journal of Numerical Cognition, 8(1), 24-35. https://doi.org/10.5964/jnc.7299 Abstract: Being able to perform computational estimations efficiently is an important skill. Furthermore, computational estimation experiments are used to study general principles in strategy development. Rounding strategies are common in computational estimation. However, little is known about whether and when children use a mixed-rounding strategy (i.e., both rounding up and down in one estimation) and how demanding this is in comparison to only rounding-down or only rounding-up. Therefore, we systematically varied the size of unit digits (i.e., the rightmost digit in a whole number) in 72 addition problems. These estimation problems were presented to fourth graders. Most children preferred to use mixed-rounding on mixed-unit problems and therefore adjusted their strategy choice to the individual unit digits in a calculation. Additionally, the sum of units barely influenced children’s strategy choice. On mixed-rounding calculations, the proportion of best strategy use was comparable to that of rounding-up and the latencies to produce an estimate with mixed-rounding were between those for rounding-down and rounding-up. Therefore, the mixed-rounding strategy was in the difficulty range of the two more frequently studied rounding strategies; it was also the preferred strategy for mixed-unit problems by children who adapted their estimation strategies. Based on these findings we argue that research into strategy development with estimation tasks should also include mixed-rounding to improve ecological validity.

Keyword(s)

arithmetic computational estimation strategies rounding children

Persistent Identifier

Date of first publication

2021-07-30

Publisher

PsychArchives

Citation

Poloczek, S., Hammerstein, S., & Büttner, G. (2021). Dataset for: Children’s mixed-rounding strategy use in computational estimation. PsychArchives. https://doi.org/10.23668/PSYCHARCHIVES.5023
  • Author(s) / Creator(s)
    Poloczek, Sebastian
  • Author(s) / Creator(s)
    Hammerstein, Svenja
  • Author(s) / Creator(s)
    Büttner, Gerhard
  • Other kind(s) of contributor
    Goethe University Frankfurt
  • PsychArchives acquisition timestamp
    2021-07-30T06:34:12Z
  • Made available on
    2021-07-30T06:34:12Z
  • Date of first publication
    2021-07-30
  • Abstract / Description
    Dataset for: Poloczek, Hammerstein & Büttner (2022). Children’s mixed-rounding strategy use in computational estimation. Journal of Numerical Cognition, 8(1), 24-35. https://doi.org/10.5964/jnc.7299 Abstract: Being able to perform computational estimations efficiently is an important skill. Furthermore, computational estimation experiments are used to study general principles in strategy development. Rounding strategies are common in computational estimation. However, little is known about whether and when children use a mixed-rounding strategy (i.e., both rounding up and down in one estimation) and how demanding this is in comparison to only rounding-down or only rounding-up. Therefore, we systematically varied the size of unit digits (i.e., the rightmost digit in a whole number) in 72 addition problems. These estimation problems were presented to fourth graders. Most children preferred to use mixed-rounding on mixed-unit problems and therefore adjusted their strategy choice to the individual unit digits in a calculation. Additionally, the sum of units barely influenced children’s strategy choice. On mixed-rounding calculations, the proportion of best strategy use was comparable to that of rounding-up and the latencies to produce an estimate with mixed-rounding were between those for rounding-down and rounding-up. Therefore, the mixed-rounding strategy was in the difficulty range of the two more frequently studied rounding strategies; it was also the preferred strategy for mixed-unit problems by children who adapted their estimation strategies. Based on these findings we argue that research into strategy development with estimation tasks should also include mixed-rounding to improve ecological validity.
    en
  • Review status
    unknown
    en
  • Citation
    Poloczek, S., Hammerstein, S., & Büttner, G. (2021). Dataset for: Children’s mixed-rounding strategy use in computational estimation. PsychArchives. https://doi.org/10.23668/PSYCHARCHIVES.5023
    en
  • Persistent Identifier
    https://hdl.handle.net/20.500.12034/4451
  • Persistent Identifier
    https://doi.org/10.23668/psycharchives.5023
  • Language of content
    eng
  • Publisher
    PsychArchives
    en
  • Is related to
    https://www.psycharchives.org/handle/20.500.12034/4449
  • Is related to
    https://www.psycharchives.org/handle/20.500.12034/4450
  • Is related to
    https://hdl.handle.net/20.500.12034/5522
  • Keyword(s)
    arithmetic
    en
  • Keyword(s)
    computational estimation
    en
  • Keyword(s)
    strategies
    en
  • Keyword(s)
    rounding
    en
  • Keyword(s)
    children
    en
  • Dewey Decimal Classification number(s)
    150
  • Title
    Dataset for: Children’s mixed-rounding strategy use in computational estimation
    en
  • DRO type
    researchData
    en