Table 1.
Participants' Description*
| Participant** | Age | Deafness | Level of MR*** | MR test | Other features |
| Mary | 43 | No | Mild | WAIS-R | None |
| Rose | 61 | No | Mild | WAIS | Epilepsy |
| John | 34 | No | Mild | WAIS | None |
| Paul | 21 | Profound bilateral/sensorineural hearing loss | Severe | Hiskey Nebraska Test of Learning Aptitudes | Cerebral palsy |
| Peter | 25 | Profound bilateral/sensorineural hearing loss | Low average to mild | Test of Nonverbal Intelligence Form A | None |
| Kate | 23 | Profound bilateral/sensorineural hearing loss | Moderate | Cerebral palsy | |
| Bob | 58 | sensorineural hearing loss (67dB right, 65dB left) | Upper mild | French Pictorial Test of Intelligence | Mild cerebral palsy |
Note: * Data obtained from JCDS medical records. ** The names are fictitious. *** MR – Mental Retardation