Suite test. A virtual reality based neuropsychological assessment tool for memory. A normative study on immediate, short-term and delayed memory tasks.

OBJECTIVE: To collect normative data for the Suite test, a virtual reality (VR) tool designed to assess memory processes. METHOD: The normative sample included 676 subjects (49.7% female), aged from 12 to 85 years. The Suite test comprises a 360-degree VR environment designed as a furniture shop, in which participants must group specific sets of furniture items (ordered by different families of customers) by clicking on the furniture to be packed following instructions from a voice-over. RESULTS: Core variables provided were grouped into immediate, short-term and long-term delayed recall. Cluster analyses established five age groups (12 years old, 13 to 26, 27 to 44, 45 to 58, and 59 to 85) with gender differentiated norms only deemed necessary for those transitioning from adolescence to adulthood (13 to 26) and from middle age to older adulthood (45 to 58). No statistically significant differences were found for additional gender × age normative groups, or for any group differentiated by educational level. A confirmatory factor analysis raised the existence of two differentiated factors, one associated to encoding processes (immediate memory trials) and the other to retrieval processes (both short term and long-term delayed recall trials grouping into the same factor). Additional results on the test reliability and internal consistency are presented. CONCLUSIONS: Suite Test can help explore memory deficits across the life span and differentiate between visual and verbal memory strategies. Further research is required to study the test sensitivity and specificity, as well as convergent validity studies with well-established memory assessment tools.

Ice Cream: new virtual reality tool for the assessment of executive functions in children and adolescents: a normative study.

This study focuses on the obtention of normative data for participants between 8 and 16 years old who were administered the Ice Cream test, a virtual reality tool designed to evaluate executive functions. The normative sample comprised n = 821 participants (49% female), with an age range of 8 to 16 years old, recruited across nine different testing sites in Spain. Experienced evaluators in psychological assessment, recruited and trained by the developer of the test, administered the test to the recruited sample. An empirical analysis of Ice Cream identified three factors, namely planning, learning and flexibility. Descriptive normative groups by age and gender were initially provided. A homoscedasticity analysis by gender showed no statistically significant differences between male and female participants. Cluster analysis by age suggested the creation of different age groups, respectively, 8 to 11 and 12 to 16 in Planning and Flexibility, and 8 to 9 and 10 to 16 in Learning, and subsequently, descriptive data for the established age groups per factor are shown. A confirmatory factor analysis showed the suitability of the 3 factors established as measured of three differentiated executive functions. Complementary data on the validity and reliability, and internal consistency of the scales are provided. Obtained normative data are relevant for evaluating executive functions in children and adolescents in a more ecological way. Further studies are needed to determine sensitivity and specificity of Ice Cream VR test to measure executive functions in different clinical populations.