ERIC Number: EJ1162265
Record Type: Journal
Publication Date: 2017-Nov
Abstractor: As Provided
Associations between the 2D:4D Proxy Biomarker for Prenatal Hormone Exposures and Symptoms of Developmental Language Disorder
Redmond, Sean M.; Ash, Andrea C.
Journal of Speech, Language, and Hearing Research, v60 n11 p3226-3236 Nov 2017
Purpose: Relative lengths of the index (2D) and ring (4D) fingers in humans represent a retrospective biomarker of prenatal hormonal exposures. For this reason, the 2D:4D digit ratio can be used to investigate potential hormonal contributions to the etiology of neurodevelopmental disorders. This study tested potential group differences in 2D:4D digit ratios in a sample of boys with and without developmental language disorder (DLD) and examined the strength of associations between 2D:4D digit ratio and a battery of verbal and nonverbal measures. Method: A group of 29 boys affected by DLD and a group of 76 boys with typical language abilities participated (age range = 5;6-11;0 years). Scanned images were used to measure finger lengths. Language measures included the core language subtests from the Clinical Evaluation of Language Fundamentals--Fourth Edition (Semel, Wiig, & Secord, 2003), a nonword repetition task, a sentence recall task, and the Test of Early Grammatical Impairment (Rice & Wexler, 2001). Results: Significant group differences indicated lower 2D:4D digit ratios in the group with DLD. Modest associations were found between 2D:4D digit ratios and some Clinical Evaluation of Language Fundamentals--Fourth Edition subtests. Conclusions: Prenatal hormone exposures may play a role in the etiology of some language symptoms.
Descriptors: Human Body, Prenatal Influences, Physiology, Etiology, Neurological Impairments, Developmental Disabilities, Males, Language Impairments, Verbal Communication, Nonverbal Communication, Language Tests, Grammar
American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: firstname.lastname@example.org; Web site: http://jslhr.pubs.asha.org
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Sponsor: National Institute on Deafness and Other Communication Disorders (NIDCD)
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Clinical Evaluation of Language Fundamentals
Grant or Contract Numbers: R01DC011023