Measuring 3-D understanding on the Web and in the laboratory.
Behav Res Methods
; 39(4): 926-39, 2007 Nov.
Article
em En
| MEDLINE
| ID: mdl-18183910
ABSTRACT
We describe the ongoing development of a psychometric test to measure understanding of three-dimensional (3-D) concepts represented in drawings. The test consists of five subtests requiring participants to complete timed choice tasks previously used in experimental investigations of 3-D understanding, and a new subtest based on the idea of true length. We examined performance in terms of accuracy and response time usingboth laboratory- and Web-based methods of delivery. Reliability coefficients were high for both methods (.90 and .96, respectively, for accuracy, and .87 and .95, respectively, for response time measures), but Web-based participants produced consistently lower overall scores. Issues regarding the deployment of, and recruitment for, complex Web-based experimental tasks, and factors affecting comparisons between Web and laboratory results, such as the presence of an experimenter, and interface and sample differences, are discussed.
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Bases de dados:
MEDLINE
Assunto principal:
Cognição
/
Internet
/
Imageamento Tridimensional
/
Laboratórios
Limite:
Adolescent
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Behav Res Methods
Assunto da revista:
CIENCIAS DO COMPORTAMENTO
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Austrália