The Bicycle Drawing Test (bdt) is a measure of mechanical reasoning and visual-spatial and graphic functions. An adequate validation of the coding criteria of this test is still lacking. Aims of this work are: 1. to check the reliability of the scales by Greenberg, Rodriguez e Sesta (1994); 2. to explore other possible dimensions; 3. to compare the drawing and the copying task, in order to study the cognitive processes involved in each mode of execution. bdt (drawing and copying) was administered to 326 children from 7 to 10 years old. None of the categories proposed by Greenberg, Rodriguez e Sesta (1994) reached a sufficient Cronbach’s α. With item analyses and explorative factor analyses we found three dimensions: Mechanical Reasoning (mr), Fine Pictorial Skill (fps), Spatial Organization (so). Separate ancovas were used to compare mr and so by sex and age, including a covariate: an index of visual-motor control, i.e. the sum of the only five items in which the scores were higher in the drawing than in the copy (belonging all to the fps scale). In sum, our preliminary analyses showed that some items of the Greenberg’s coding are not discriminative, and the remaining items have a different dimensionality. Our subsequent analyses showed that the bdt can measure efficiently mechanical reasoning and spatial organization, without significant interference of visual-motor control.

The bicycle drawing test: mechanical reasoning and/or visual-spatial abilities? / Cannoni, Eleonora; DI NORCIA, Anna; Federico, Francesca. - In: RASSEGNA DI PSICOLOGIA. - ISSN 1125-5196. - STAMPA. - XXXI:3(2014), pp. 97-106.

The bicycle drawing test: mechanical reasoning and/or visual-spatial abilities?

CANNONI, Eleonora;DI NORCIA, Anna;FEDERICO, FRANCESCA
2014

Abstract

The Bicycle Drawing Test (bdt) is a measure of mechanical reasoning and visual-spatial and graphic functions. An adequate validation of the coding criteria of this test is still lacking. Aims of this work are: 1. to check the reliability of the scales by Greenberg, Rodriguez e Sesta (1994); 2. to explore other possible dimensions; 3. to compare the drawing and the copying task, in order to study the cognitive processes involved in each mode of execution. bdt (drawing and copying) was administered to 326 children from 7 to 10 years old. None of the categories proposed by Greenberg, Rodriguez e Sesta (1994) reached a sufficient Cronbach’s α. With item analyses and explorative factor analyses we found three dimensions: Mechanical Reasoning (mr), Fine Pictorial Skill (fps), Spatial Organization (so). Separate ancovas were used to compare mr and so by sex and age, including a covariate: an index of visual-motor control, i.e. the sum of the only five items in which the scores were higher in the drawing than in the copy (belonging all to the fps scale). In sum, our preliminary analyses showed that some items of the Greenberg’s coding are not discriminative, and the remaining items have a different dimensionality. Our subsequent analyses showed that the bdt can measure efficiently mechanical reasoning and spatial organization, without significant interference of visual-motor control.
Bicycle Drawing Test; mechanical reasoning; visual-spatial abilities; copying.
01 Pubblicazione su rivista::01a Articolo in rivista
The bicycle drawing test: mechanical reasoning and/or visual-spatial abilities? / Cannoni, Eleonora; DI NORCIA, Anna; Federico, Francesca. - In: RASSEGNA DI PSICOLOGIA. - ISSN 1125-5196. - STAMPA. - XXXI:3(2014), pp. 97-106.
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/654812
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact