- Hand Reading Course (29/33): PSYCHOLOGY -
Developmental problems and disorders can manifest through many aspects of human functioning. When certain problems occur at an early age parents often jump into conclusions fairly quickly, like for example: "my child is hyperactive (ADHD)" or "my child is dyslectic". Also 'autism' is today a widely used word in daily life.
LEVEL 1: Dermatoglyphics and development
Over the years various studies were focussed on the relationship between autism and dermatoglyfen in hand.1-6 Quite a few of these studies reported significant results related to the dermatoglyphics on the fingertips (fingerprints), however, sometime the results speak against each other.
This can be attributed to the fact that not all studies specified the autistic withdrawal of the persons under investigation.
Given the previously described results in this section, for example, one can assume that intelligent people who have autism might display other hand characteristics compared to the autistic people who also have a low IQ.
Nevertheless, most studies show results related to the presence of many 'whorls' or 'arch' patterns on fingertips. Radial patterns appear also to play a significant role.
Dyslexia is also associated with dermatoglyphics. In one study of dyslexia by Jamison7 the results pointed out to asymmetrical dermatoglyphics: related to the differences between the right hand and the left hand.
LEVEL 2: Hand morphology and development
As far as we know, there are no studies focused on the morphology of the hand in relation to developmental disorders.
1 - Arrieta, M.I. et.al. (1988). Digital dermatoglyphics in autistic children. Bull. of ADA, 7, p.7-18.
2 - Arrieta, M.I. et.al. (1990). Dermatoglyphic analysis of autistic Basque. Journal of medical genetics, 35, p.1-9.
3 - Hartin, P.J. & Barry, R.J. (1988). A comparative dermatoglyphic study of autistic, retarded and normal children. Journal of autism and developmental disorders, vol.9, no.3, p.233-246.
4 - Sank, D. & Sank Firschein, B.D. (1979). Fingerprints and laterality preference of early onset autism. Birth Defects: Original Article Series, vol.XV, no.5, p.679-695.
5 - Walker, A.H. (1976). Dermatoglyphic patterns in infantile autism. In Colleman M. (ed): The autistic syndromes. Amsterdam: North Holland Publishing Company.
6 - Walker, A.H. (1977). A dermatoglyphic study of autistic patients. Journal of Autism and Childhood Schizophrenia, vol.7, no.1, p.11-21.
7 - Jamison, C.S. (1988). Palmar dermatoglyphics of dyslexia. American Journal of Phys. Anthropology, aug, 76 (4), p.505-513.