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On the other hand, in the case of the LSAS-CA, there are few studies on its psychometric properties and the samples are relatively small, whereby it may be difficult to generalize regarding aspects such as the cut-off point or the scale's factor structure.
Regarding another of the questionnaires used for assessing social anxiety in children, the Liebowitz Social Anxiety Scale for Children and Adolescents (LSAS-CA), it maintains the same structure as the adult scale it originates from (the LSAS; Liebowitz, 1987), that is, 24 items with a double answer for each one of them: one measuring anxiety and the other avoidance, with this structure often being criticized (e.g., Heimberg et al., 1999; Oakman, Van Ameringen, Mancini, & Farvolden, 2003) given the scant additional information this double answer provides and the effort implied to answer not 24 but 48 items.
The SPAI-C was administered along with the remaining scales listed in the previous section (LSAS-CA, SAS-A, SPS, and SIAS) in the schools after obtaining parental consent for children to participate in the study.
Moreover, the concurrent validity of the SPAI-C with the scales LSAS-CA, SAS-A, SPS, and SIAS was assessed, and an analysis of variance was performed to study possible differences in the scale depending on sex and age.
All correlations exceeded .60, and the highest one was that obtained between the SPAI-C and the fear subscale of the LSAS-CA.
As a test of the reliability, validity, and internal consistency of the LSAS-CA, 55 children aged 9-18 years, including 23 with anxiety disorders and 32 normal controls, were assessed using the LSAS-CA and five other standardized, self-reported anxiety scales:
According to the trial, the LSAS-CA has high internal consistency (Cronbach's alpha = 0.93), high test-retest reliability (total score, r = 0.92; subscores, r = 0.82-0.90), and moderate to high correlations with other scales of anxiety and distress.
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