Psychometric Properties of the Spanish Full and Short Forms of the System Usability Scale (SUS): Detecting the Effect of Negatively Worded Items.
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| Title: | Psychometric Properties of the Spanish Full and Short Forms of the System Usability Scale (SUS): Detecting the Effect of Negatively Worded Items. |
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| Authors: | Castilla, Diana (AUTHOR), Jaen, Irene (AUTHOR), Suso-Ribera, Carlos (AUTHOR), Garcia-Soriano, Gemma (AUTHOR), Zaragoza, Irene (AUTHOR), Breton-Lopez, Juani (AUTHOR), Mira, Adriana (AUTHOR), Diaz-Garcia, Amanda (AUTHOR), Garcia-Palacios, Azucena (AUTHOR) |
| Source: | International Journal of Human-Computer Interaction. Aug2024, Vol. 40 Issue 15, p4145-4151. 7p. |
| Subjects: | Cronbach's alpha, Psychometrics, Spaniards |
| Abstract: | This study examined the SUS's psychometric properties with the Spanish population considering the plausible method effects associated with negatively worded items. A short form consisting of either direct or reversed items was also examined. Participants were 1321 Spaniards who completed the SUS. Confirmatory analyses showed that the SUS was a valid measure with a one-factor structure when method errors associated with negatively worded items were considered (CFI =.932, TLI =.898; RMSEA =.055, CI 90% = 0.047, 0.062), and shown evidence of reliability (Cronbach's alpha =.76). The short version with only positively worded items also showed to be a valid (CFI =.973, TLI =.946; RMSEA =.057, CI 90% =.041,.075) and reliable measure (Cronbach alpha =.77) to assess usability. This is the first study to clarify the effect of negatively worded items in the structure of the SUS and propose a short version of the SUS to be used with Spaniards when a brief version is preferred to test usability. [ABSTRACT FROM AUTHOR] |
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| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | This study examined the SUS's psychometric properties with the Spanish population considering the plausible method effects associated with negatively worded items. A short form consisting of either direct or reversed items was also examined. Participants were 1321 Spaniards who completed the SUS. Confirmatory analyses showed that the SUS was a valid measure with a one-factor structure when method errors associated with negatively worded items were considered (CFI =.932, TLI =.898; RMSEA =.055, CI 90% = 0.047, 0.062), and shown evidence of reliability (Cronbach's alpha =.76). The short version with only positively worded items also showed to be a valid (CFI =.973, TLI =.946; RMSEA =.057, CI 90% =.041,.075) and reliable measure (Cronbach alpha =.77) to assess usability. This is the first study to clarify the effect of negatively worded items in the structure of the SUS and propose a short version of the SUS to be used with Spaniards when a brief version is preferred to test usability. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 10447318 |
| DOI: | 10.1080/10447318.2023.2209840 |
