page no 4 first paragraph
Unlike disability, the term diffable comes from a combination of two words, namely different abilities or differently able. The term indicates that diffables are not defects or deficiencies, but rather refer to people with different abilities. From its understanding, the connotation of the term diffable is far more positive than the word disability---- Please give the source of references

Competency can be a reference for employers since it is directly related to the personal abilities and characteristics of employees with disabilities and non-disabled people it sounds a definition but there is no source of references here?--page 5 paragraph 1

Sometimes, it is not a lack of skills or competencies that become reasons for persons with disabilities to be productive individuals, but physical barriers and organizations to utilize their skills in the workplace. The willingness of employers to make relatively small adjustments to job design, regulation of work stations or production processes, or to allow workers to use tools and adaptive technology can significantly increase productivity (Powers, 2008).  paragraph just before the hypotheses--->It gives the signal that the focus of study then might be to investigate the physical barriers and organization barrier not competency isn’t? perhaps you could more elaborate the phenomenon of disability competence here instead of statement "Sometimes, it is not a lack of skills or competencies that become reasons for persons with disabilities to be productive individuals, but physical barriers and organizations to utilize their skills in the workplace"