Questionnaire Analysis

The Attitudes Towards Disabled Persons Questionnaire (ATDP-20) was created by H. E. Yuker, J. R. Block, and J. H. Young in 1966 and is an objective assessment tool oriented toward measuring society’s acceptance of disability.

Purpose of the Questionnaire

The ATDP-20 was constructed with the aim of recording people’s perceptions and attitudes toward children with any form of disability.

Question Calibration

Participants are asked to respond to 20 questions, expressing their positive attitudes toward children with disabilities and their broader acceptance of them, using a 6-point Likert-type scale ranging from -3 (strongly disagree) to +3 (strongly agree). Completion time is approximately 20–30 minutes, and anonymity is preserved.

Statistical Analysis

The questionnaire score increases proportionally and is derived from the sum of the points for each question. The maximum possible total score a participant can achieve is 120 points, and the minimum is -120. Higher scores are interpreted as reflecting a positive attitude toward children with disabilities, whereas lower scores correspond to a negative attitude. Notably, the Likert scale does not include a score of 0, as the goal is to capture either a positive or negative attitude. Therefore, the absence of an attitude, represented by 0, is not considered acceptable.

Validity and Reliability

The questionnaire has been adapted into Greek by V. Matziou and K. Chatira, using the process of reverse independent translation. The original version of the questionnaire demonstrates satisfactory levels of construct validity and criterion validity. It is considered to objectively, reliably, and validly reflect respondents’ perceptions and attitudes toward children and young people with physical disabilities.

References

Author: H. E. Yuker, J. R. Block, and J. H. Young
Greek adaptation: V. Matziou and K. Chatira
Yuker, H. E., Block, J. R., & Young, J. H. (1986). The measurement of attitudes toward disabled persons. Albertson, NY: Human Resources Center.