Objective::The aim of this study is to develop and evaluate a set of psychometrically equivalent disyllabic wordlist (SC-10) in Singapore Mandarin for clinical use.Study design::A preliminary set of 1000 words were obtained from a dictionary of frequently used words by Singapore students. Ten native judges rate the familiarity level of each word. This is followed by a face-to-face public survey to rank the shortlisted word set from most to least familiar. The final 108 disyllabic words were recorded by a native female talker. 20 normal hearing subjects were used to obtain the percentage of correct word recognition at 24 intensity levels (-10 dB HL to 26 dB HL in 2 dB increment). Psychometric function slopes were calculated for each word. 100 words were eventually chosen and assigned into ten 10-word lists based on a psychometric balancing protocol. Minor digital adjustments were made to the intensity of each wordlist to improve their auditory homogeneity.Results::The calculated regression slopes in the psychometric functions for the ten lists are between 8.0 and 9.8%/dB. Single factor ANOVA analysis showed no significant difference in both the mean intensity required to obtain 50% recognition score (n f = 0.109, n df = 9, n p = 0.999) and the slopes of the psychometric functions (n f = 0.078, n df = 9, n p = 0.999) between the ten word lists. List validation on 25 normal hearing participants (PTA = 11.0 dB HL, n SD = 4.3) showed a mean speech recognition threshold (SRT) of 9.3 dB HL (n SD = 3.5)and regression slope of 8.395%/dB. Quadratic regression analysis showed a positive correlation (n r2 = 0.923) between presentation level and word recognition score (WRS). The difference between PTA and SRT of each subject all fall within the clinically acceptable difference of 10 dB HL. Test-retest reliability, carried out on 20 subjects at three levels (SRT-5, SRT, and SRT+5 dB), showed no significance difference between word recognition score when the same participant is tested again at the same intensity level using a different wordlist.n Conclusion::All in all, it shows that the SC-10 speech materials are valid for clinical use for Mandarin speech audiometry in Singapore.“,”Objective::The aim of this study is to develop and evaluate a set of psychometrically equivalent disyllabic wordlist (SC-10) in Singapore Mandarin for clinical use.Study design::A preliminary set of 1000 words were obtained from a dictionary of frequently used words by Singapore students. Ten native judges rate the familiarity level of each word. This is followed by a face-to-face public survey to rank the shortlisted word set from most to least familiar. The final 108 disyllabic words were recorded by a native female talker. 20 normal hearing subjects were used to obtain the percentage of correct word recognition at 24 intensity levels (-10 dB HL to 26 dB HL in 2 dB increment). Psychometric function slopes were calculated for each word. 100 words were eventually chosen and assigned into ten 10-word lists based on a psychometric balancing protocol. Minor digital adjustments were made to the intensity of each wordlist to improve their auditory homogeneity.Results::The calculated regression slopes in the psychometric functions for the ten lists are between 8.0 and 9.8%/dB. Single factor ANOVA analysis showed no significant difference in both the mean intensity required to obtain 50% recognition score (n f = 0.109, n df = 9, n p = 0.999) and the slopes of the psychometric functions (n f = 0.078, n df = 9, n p = 0.999) between the ten word lists. List validation on 25 normal hearing participants (PTA = 11.0 dB HL, n SD = 4.3) showed a mean speech recognition threshold (SRT) of 9.3 dB HL (n SD = 3.5)and regression slope of 8.395%/dB. Quadratic regression analysis showed a positive correlation (n r2 = 0.923) between presentation level and word recognition score (WRS). The difference between PTA and SRT of each subject all fall within the clinically acceptable difference of 10 dB HL. Test-retest reliability, carried out on 20 subjects at three levels (SRT-5, SRT, and SRT+5 dB), showed no significance difference between word recognition score when the same participant is tested again at the same intensity level using a different wordlist.n Conclusion::All in all, it shows that the SC-10 speech materials are valid for clinical use for Mandarin speech audiometry in Singapore.