Data on participants’ SD and EI were collected before and after the sessions using the following instruments:
The Vineland social maturity scale (VSMS): This questionnaire was developed by Vineland in 1953. The 8 dimensions of this scale include communication skills, general self - help ability, occupation skills, self - direction, self - help eating, self - help dressing, and socialization skills. This scale is completed through interviewing parents. VSMS assesses the ability of doing routine daily activities. If a child is able to do a certain activity, the activity is scored 1; but, if he/she cannot do that activity, the score is 0. Moreover, when an activity is labeled “NO+”, it means that the child had no adequate time to do it. In other words, he/she can do the activity in adequate time. If that activity is located between two 1 - scored activities, between a 1 - scored and a 0 - scored activity, or between two 0 - scored activities, the score of that activity is 1, 0.5, and 0, respectively. Besides, some activities are labeled “F+”, meaning that the child has a problem, which interferes with doing those activities; however, he/she will be able to do the activities if the problem is resolved. These items are also scored 1. On the other hand, some activities are labeled “F-”, denoting that the child is permanently unable to do those activities due to an irreversible disability. These activities are scored 0. Finally, some activities are labeled “±”, which means that the child can do those activities in some occasions and is unable to do them in some other occasions. These activities are scored 0.5 (
16). The youngest participant in the current study was 4 years old; therefore, the total VSMS score related to the 0 - 2 - year age group (i.e., 34) was considered as the base score for all participants. This score was added to the total score of VSMS. Then, the final score was used to determine the intended child’s social age based on the manual of VSMS. Finally, social intelligence quotient was calculated through dividing social age by chronological age and multiplying the result by 100 (
16). Previous studies reported acceptable validity and reliability for the scale with a Cronbach’s alpha of 0.92 (
1) and 0.68, respectively (
17).
The Bradberry - Greaves emotional intelligence test (EIT): The test was developed in 2005, EIT contains 28 items in the 4 components of self-awareness (6 items), self - management (9 items), social awareness (5 items), and relationship management (8 items). EIT items are answered on a 6 - point Likert - scale from “Never” (scored 1) to “Always” (scored 6), resulting in a total EIT score of 28 - 168. The Cronbach’s alpha of EIT and its components range 0.7 to 0.89 (
17). Previous studies reported that EIT had acceptable validity (
17,
18).
Data were analyzed with SPSS version 16.0. After getting ensured of the normality of data, the Chi - square, the paired - samples t, and the independent-samples t tests as well as the analysis of covariance (ANCOVA) were performed for data analysis at a significance level of < 0.05.