One picture or a thousand words? Influence of question length and illustration support on the success and skip rates on online tests

  • Ernest Redondo
    Escuela de Arquitectura de Barcelona (Universidad Politécnica de Cataluña)
  • Joaquim Regot
    Escuela de Arquitectura de Barcelona (Universidad Politécnica de Cataluña)
  • David Fonseca
    Escuela de Arquitectura, La Salle Universitat Ramon Llull
  • Francesc Valls
    Escuela de Arquitectura de Barcelona (Universidad Politécnica de Cataluña) francesc.valls[at]upc.edu
  • Lluís Giménez
    Escuela de Arquitectura de Barcelona (Universidad Politécnica de Cataluña)

Abstract

The growing popularity of automatically graded online tests, either as an evaluation or self-assessment tool in online or blended education, demands a review of how these questions are designed and delivered to their intended audience. This paper analyzes the results of over 20,000 pre-university mock online quizzes designed to train the students for the Spanish university admission test (known as “Pruebas de Acceso a la Universidad” or “Selectividad”) in the technical drawing subject, corresponding to the June and September intakes of 2009 and 2015. The influence of two key aspects on the questions success and skip rates is assessed: (a) the presence or absence of illustration support and (b) the length of the question as a proxy of reading comprehension difficulty. The results support that the presence of an accompanying illustration in the questions result in fewer skipped questions and mode successful answers, while the length of the question has the opposite effect. The performance difference in the 6-year span is also discussed, showing a slight decline over time in the pass rates while the skip rates remain stable. When comparing both two intakes, corresponding to different academic profiles of students that passed the June exam and those who did not, the success ratio is unsurprisingly lower for the students in the second intake. These findings should help improving the design of online quizzes, including more visual content and/or rephrasing the questions to be more concise, to fit the requirements of students educated in a more visual environment of multimedia technologies.
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Redondo, E., Regot, J., Fonseca, D., Valls, F., & Giménez, L. (2016). One picture or a thousand words? Influence of question length and illustration support on the success and skip rates on online tests. Education in The Knowledge Society, 17(4), 111–128. https://doi.org/10.14201/eks2016174111128

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Author Biographies

Ernest Redondo

,
Escuela de Arquitectura de Barcelona (Universidad Politécnica de Cataluña)
Av. Diagonal 649, 08028 Barcelona (España)

Joaquim Regot

,
Escuela de Arquitectura de Barcelona (Universidad Politécnica de Cataluña)
Av. Diagonal 649, 08028 Barcelona (España)

David Fonseca

,
Escuela de Arquitectura, La Salle Universitat Ramon Llull
C. San Joan de la Salle 42, 08022 Barcelona (España)

Francesc Valls

,
Escuela de Arquitectura de Barcelona (Universidad Politécnica de Cataluña)
Av. Diagonal 649, 08028 Barcelona (España)

Lluís Giménez

,
Escuela de Arquitectura de Barcelona (Universidad Politécnica de Cataluña)
Av. Diagonal 649, 08028 Barcelona (España)
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