Home > Research > Publications & Outputs > Mapping the predictors of single word recognition

Electronic data

  • Poster&Ref

    Final published version, 214 KB, PDF document

    Available under license: None

  • References

    Final published version, 68.2 KB, PDF document

    Available under license: None

View graph of relations

Mapping the predictors of single word recognition: a research synthesis

Research output: Contribution to conference - Without ISBN/ISSN Poster

Published
Publication date30/08/2017
Original languageEnglish
EventUnited Kingdom Orthography Group Conference - Reading University, Reading, United Kingdom
Duration: 11/07/201711/07/2017

Conference

ConferenceUnited Kingdom Orthography Group Conference
CountryUnited Kingdom
CityReading
Period11/07/1711/07/17

Abstract

This research synthesis examines 77 reports that have manipulated psycholinguistic variables across contrasting groups in word naming and/or lexical decision tasks. Studies using adult samples and child samples are compared for the generation of appropriate predictions and informative priors for a future study focussing upon unskilled young people and adults.

Using a random-effects model, meta-analysed effect sizes (Pearson’s r and odds ratios) for frequency, length, consistency, neighbourhood size, age-of-acquisition, imageability and concreteness range from moderate to large for response time and accuracy data. Ability and age measures were also collected as group contrast measures.

For lexical decision accuracy scores, the trend was for adults to show stronger effect sizes. In word naming tasks for accuracy, children tended to show stronger effect sizes. For response time data across both tasks, children also tended to show stronger effect sizes.
Adult accuracy appears to be more dependent upon phonological and orthographical properties than semantics properties, however, semantic properties appear to play a role in response times. Whereas semantic properties of words show a stronger effect in child samples for both accuracy and response time across word naming and lexical decision.

The results of this analysis need to be treated with caution: confidence intervals are wide and accompanying heterogeneity statistics show very high values. Differences in experimental design, sample selection and choices for statistical analysis may all serve to inflate the summary effect sizes. Going forward, methods for treating this inflation are suggested and protocols to systematically reduce the heterogeneity are discussed.