Revising the First Version of the Receptive Picture Vocabulary Test and Designing the First Version of Expressive Picture Vocabulary Test Based on It for Normal Persian-Speaking Children Aged 30 to 71 Months

Heydarpanahi, Saba; Ghorbani, Ali; Jalilehvand, Nahid; Kamali, Mohammad

Volume 13 - Articles-1402 MEJDS (2023) 13: 131 | Back to browse issues page

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Heydarpanahi S, Ghorbani A, Jalilehvand N, Kamali M. Revising the First Version of the Receptive Picture Vocabulary Test and Designing the First Version of Expressive Picture Vocabulary Test Based on It for Normal Persian-Speaking Children Aged 30 to 71 Months. MEJDS 2023; 13 :131-131
URL: http://jdisabilstud.org/article-1-2867-en.html

Revising the First Version of the Receptive Picture Vocabulary Test and Designing the First Version of Expressive Picture Vocabulary Test Based on It for Normal Persian-Speaking Children Aged 30 to 71 Months

Saba Heydarpanahi¹

, Ali Ghorbani ^*²

, Nahid Jalilehvand³

, Mohammad Kamali⁴

1- MA in Speech Therapy, The School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
2- Instructor, Speech Therapy Faculty, The School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
3- Associate Professor, Rehabilitation Research Center, Speech Therapy Faculty, The School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
4- Professor of Health Education and Health Promotion, Rehabilitation Basic Sciences Faculty, Rehabilitation Sciences Faculty, Rehabilitation Research Center, Iran University of Medical Sciences, Tehran, Iran

Abstract: (922 Views)

Abstract
Background & Objectives: Vocabulary development can be influenced by factors, such as age, gender, culture, social class, language ability, etc. Usually, age and gender are two important components considered more in developing a child's vocabulary. Vocabulary development is one of the most important areas of language development. Vocabulary is classified into two categories: understanding and expressive. The treasury of receptive and expressive vocabulary is one of the efficient and useful indicators in measuring language development. The amount of vocabulary is a significant indicator of language, and a tool is necessary to measure it accurately. The development of tools is essential for assessment in speech and language pathology. The primary purpose of the present study was to revise the first version of the receptive picture vocabulary test and design the first version of the expressive picture vocabulary test for Persian–speaking children aged 30 to 71 months.
Methods: The current methodological research carried out a descriptive–analytical and cross–sectional method. The reconstruction of the pictures of the first version of the receptive picture vocabulary test was done, including 240 colored pictures divided into 15 subtests, each consisting of 16 pictures. The subtests are as follows: 1) tools, 2) home appliances, 3) body organs, 4) verbs, 5) clothes, 6) animals, 7) fruits and foods, 8) vehicles, 9) related to animals, 10) adjectives and opposites, 11) jobs, 12) places, 13) plant words, 14) nature words, and 15) colors. Each page of the receptive picture vocabulary test has 4 pictures. The examiner asks the child to point to one of the pictures that she or he named. Then, the examiner records the child's correct response on the test sheet form. The expressive picture vocabulary test was made using the pictures of the receptive picture vocabulary test. Each page of the test has one picture. The examiner asks the child to name each picture, "What is it?" or "What are they doing?" The opinions of 10 experts were used to determine the validity of the pictures. To determine the validity and reliability of the tests, 105 typically developing children aged 30–71 months participated. They were recruited from kindergarten in Tehran City, Iran. The inclusion criteria were age ≥30 months and <71 months and the children's ASQ (Ages and Stages Questionnaire) scores were normal. They had no history of seizures, brain damage, hearing disorders, speech and language disorders. All participants signed an informed consent form before data collection. The children in a propriety room with minimum noise were evaluated. All pictures were showed children via laptop screen. Internal consistency and test–retest reliability were calculated using the Cronbach alpha and intra–class correlation coefficient (ICC), respectively. Discriminative validity was analyzed using the correlation between age and the total score of the receptive picture vocabulary test. The Pearson correlation coefficient was used to check the psychometric characteristics of the tests and statistical analysis. Data analysis was done with the help of SPSS version 21 software at a significance level of α=0.05.
Results: The value of the content validity ratio (CVR) for the items of the expressive picture vocabulary test was a minimum of 0.72 and a maximum of 0.94, and the average was 0.88, and for the items of the receptive picture vocabulary test, the minimum was 0.73, and the maximum was 0.98, and the average was 0.91. The content validity index (CVI) value for the expressive picture vocabulary test was a minimum of 0.75, a maximum of 0.96, and an average of 0.91. For the receptive picture vocabulary test, it was a minimum of 0.75 and a maximum of 0.99, and the average was 0.93. The Cronbach alpha coefficient was calculated as 0.92 for the expressive picture vocabulary test and 0.95 for the receptive picture vocabulary test. The value of the ICC for the total score of the expressive picture vocabulary test was 0.87, and the receptive picture vocabulary test was 0.89. Results from the Pearson correlation test indicated a positive relationship between age and the total score of the expressive picture vocabulary test (r=0.941, p=0.001) and between age and the total score of the receptive picture vocabulary test (r=0.844, p=0.001). The Pearson coefficient (r=0.940, p=0.001) showed a significant relationship between the total scores of the expressive and receptive picture vocabulary tests.
Conclusion: The present study showed the sufficient psychometric properties of the receptive and expressive picture vocabulary tests. It is suggested that speech and language pathologists use these tools for clinical vocabulary evaluation of Persian–speaking children aged 30–71 months.

Keywords: Receptive vocabulary, Expressive vocabulary, Validity, Reliability

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Type of Study: Original Research Article | Subject: Rehabilitation

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