Psychometric properties of a Spanish adaptation of the Matching Familiar Figures Test (MFFT-20)

This study constitutes the first stage of the Spanish adaptation of the Matching Familiar Figures Test 20 (MFFT-20; Cairns & Cammock, 1978). The normative data for reflexivity-impulsivity and efficiency-inefficiency were obtained by means of the Salkind and Wright formula (1977). The study sample was composed of 700 Spanish children, aged 6 to 12. This paper presents the results for reliability and latency-error correlation. The development of errors and latencies at older ages and gender differences were also analyzed. No significant differences between boys and girls were observed with respect to any of the variables. A high reliability was established for errors as well as for latencies. Errors decreased and latency increased with age. It is important to note that the data for both sexes at 8, 9, and 10 years of age reveal a stabilization in the latencies even though the errors continue to decrease. The psychometric properties of the Spanish adaptation of the MFFT-20 are discussed. Results are analyzed by examining the instrument's validation using the normative data presented here. The study concludes that the MFFT-20 is a reliable and valid measure of reflexivity-impulsivity.