An Examination of the 2D:4D Ratio, Handedness and Footedness in Attention Deficit Hyperactivity Disorder

Orhan Kocaman; Tayfun Kara; Pınar Aydoğan Avşar; Tacettin Kuru

Article Details

An Examination of the 2D:4D Ratio, Handedness and Footedness in Attention Deficit Hyperactivity Disorder

Authors:

Orhan Kocaman | Tayfun Kara | Pınar Aydoğan Avşar | Tacettin Kuru

Publisher:

Alanya Alaaddin Keykubat Üniversitesi

Main Topics:

Psikiyatri

Journal:

Acta Medica Alanya Vol.7 Issue 3, pp.249-253

Document Type:

Article

Publication Date:

12/2023

Document Language:

English

Document ID (Org No.):

2001309274

pISSN:

2587-0319

Keywords:

Abstract:

 Aim: Attention deficit hyperactivity disorder ADHD is a neurodevelopmental condition more common in boys than girls, although this gender variation has yet to be explained. The purpose of this study was to examine hand 2D:4D ratios and their association with ADHD. The study was also intended to compare hand 2D:4D ratios according to hand and foot dominance in individuals with ADHD. Methods: 168 children were included in the study, 91 diagnosed with ADHD and 77 healthy volunteers. All participants were evaluated via DSM-5 based psychiatric examinations, and their sociodemographic data were collected using forms prepared by the authors. The participants ADHD symptoms were assessed using the Conners Parent Rating Scale-Revised Short Form. 2D:4D ratios were determined by measuring the lengths of the bilateral second and fourth fingers using a digital compass. Hand and foot dominances were determined by evaluation in a clinical setting. The scores obtained were then compared. Results: Lower right and left hand 2D:4D ratios were determined in the individuals with ADHD than in the healthy controls p0.001 for both. No correlation was found between ADHD subscales and right or left hand 2D:4D ratios in the case group. No differences in 2D:4D ratios were also observed according to hand and foot dominances in the case group. Conclusion: This study produced important findings concerning whether hand 2D:4D ratios can be used as a marker of ADHD. We think that the data obtained may be of assistance to other studies assessing the phenotype characteristics of individuals with ADHD.

 Aim: Attention deficit hyperactivity disorder ADHD is a neurodevelopmental condition more common in boys than girls, although this gender variation has yet to be explained. The purpose of this study was to examine hand 2D:4D ratios and their association with ADHD. The study was also intended to compare hand 2D:4D ratios according to hand and foot dominance in individuals with ADHD. Methods: 168 children were included in the study, 91 diagnosed with ADHD and 77 healthy volunteers. All participants were evaluated via DSM-5 based psychiatric examinations, and their sociodemographic data were collected using forms prepared by the authors. The participants ADHD symptoms were assessed using the Conners Parent Rating Scale-Revised Short Form. 2D:4D ratios were determined by measuring the lengths of the bilateral second and fourth fingers using a digital compass. Hand and foot dominances were determined by evaluation in a clinical setting. The scores obtained were then compared. Results: Lower right and left hand 2D:4D ratios were determined in the individuals with ADHD than in the healthy controls p0.001 for both. No correlation was found between ADHD subscales and right or left hand 2D:4D ratios in the case group. No differences in 2D:4D ratios were also observed according to hand and foot dominances in the case group. Conclusion: This study produced important findings concerning whether hand 2D:4D ratios can be used as a marker of ADHD. We think that the data obtained may be of assistance to other studies assessing the phenotype characteristics of individuals with ADHD.

 Aim: Attention deficit hyperactivity disorder ADHD is a neurodevelopmental condition more common in boys than girls, although this gender variation has yet to be explained. The purpose of this study was to examine hand 2D:4D ratios and their association with ADHD. The study was also intended to compare hand 2D:4D ratios according to hand and foot dominance in individuals with ADHD. Methods: 168 children were included in the study, 91 diagnosed with ADHD and 77 healthy volunteers. All participants were evaluated via DSM-5 based psychiatric examinations, and their sociodemographic data were collected using forms prepared by the authors. The participants ADHD symptoms were assessed using the Conners Parent Rating Scale-Revised Short Form. 2D:4D ratios were determined by measuring the lengths of the bilateral second and fourth fingers using a digital compass. Hand and foot dominances were determined by evaluation in a clinical setting. The scores obtained were then compared. Results: Lower right and left hand 2D:4D ratios were determined in the individuals with ADHD than in the healthy controls p0.001 for both. No correlation was found between ADHD subscales and right or left hand 2D:4D ratios in the case group. No differences in 2D:4D ratios were also observed according to hand and foot dominances in the case group. Conclusion: This study produced important findings concerning whether hand 2D:4D ratios can be used as a marker of ADHD. We think that the data obtained may be of assistance to other studies assessing the phenotype characteristics of individuals with ADHD.

 Amaç: Bu çalışmada fetal testosteron maruziyetinin göstergesi olan el 2D:4D oranları ile DEHB arasındaki ilişkinin incelenmesi amaçlanmıştır. Ayrıca DEHB olanlarda el ve ayak tercihlerine göre el 2D:4D oranlarının karşılaştırılması amaçlanmıştır. Yöntem: Çalışmaya 91 DEHB tanılı ve 77 sağlıklı gönüllü olmak üzere 168 katılımcı ergen alındı. Tüm katılımcılar DSM-5 temelli psikiyatrik muayene ile değerlendirildi ve sosyodemografik verileri araştırmacılar tarafında hazırlanan formlar ile elde edildi. Katılımcıların DEHB belirtileri Conners Anababa Dereceleme Ölçeği-Yenilenmiş Kısa Form CADÖ-YK ile değerlendirildi. 2D:4D oranları, her iki elin 2. ve 4. parmak uzunlukları dijital kumpas ile ölçülerek belirlendi. El ve ayak tercihleri klinik ortamda değerlendirilerek belirlendi. Elde edilen skorlar istatistiksel olarak karşılaştırıldı. Bulgular: DEHB olan bireylerde sağlıklı kontrollere göre sağ ve sol elde daha düşük 2D:4D oranları saptandı sırasıyla p0,001, p0,001. Olgu grubunda DEHB alt ölçekleri ile sağ ve sol el 2D:4D oranları arasında ilişki bulunmadı p0.05. Olgu grubunda 2D:4D oranları ile el ve ayak tercihleri arasında fark saptanmadı p0.05. Sonuç: Çalışmamızda 2D:4D oranlarının DEHB de bir belirteç olarak kullanılabileceğine dair önemli sonuçlar elde edilmiştir. Elde ettiğimiz veriler gelecekte DEHB li bireylerin fenotipik özelliklerini değerlendiren diğer çalışmalara katkıda bulunabileceği kanaatindeyiz.

Article Details

An Examination of the 2D:4D Ratio, Handedness and Footedness in Attention Deficit Hyperactivity Disorder

Authors:

Orhan Kocaman | Tayfun Kara | Pınar Aydoğan Avşar | Tacettin Kuru

Publisher:

Alanya Alaaddin Keykubat Üniversitesi

Main Topics:

Psikiyatri

Journal:

Acta Medica Alanya Vol.7 Issue 3, pp.249-253

Document Type:

Article

Publication Date:

12/2023

Document Language:

English

Document ID (Org No.):

2001309274

pISSN:

2587-0319

attention deficit hyperactivity disorder

2D:4D ratio

handedness

footednessDikkat eksikliği hiperaktivite bozukluğu

2D:4D Oranı

el tercihi

ayak tercihi

Issues

Article Details

Authors: Orhan Kocaman | Tayfun Kara | Pınar Aydoğan Avşar | Tacettin Kuru

Publisher: Alanya Alaaddin Keykubat Üniversitesi

Main Topics: Psikiyatri

Journal: Acta Medica Alanya Vol.7 Issue 3, pp.249-253

Document Type: Article

Publication Date: 12/2023

Document Language: English

Document ID (Org No.): 2001309274

pISSN: 2587-0319

Issues

Authors:

Orhan Kocaman | Tayfun Kara | Pınar Aydoğan Avşar | Tacettin Kuru

Publisher:

Alanya Alaaddin Keykubat Üniversitesi

Main Topics:

Psikiyatri

Journal:

Acta Medica Alanya Vol.7 Issue 3, pp.249-253

Document Type:

Article

Publication Date:

12/2023

Document Language:

English

Document ID (Org No.):

2001309274

pISSN:

2587-0319