Dear Li, 

these researchers have found something: 

Exp Brain Res. 2016 Oct 3. [Epub ahead of print]

Associations between autistic traits and fractional anisotropy values in white matter tracts in a nonclinical sample of young adults.

Bradstreet LE Hecht EE, King TZ, Turner JL, Robins DL

Beatrice Marianne Ewalds-Kvist, thank you very much! Do you also know of a data base for various other traits?

Yes, every basic psychology book covers the brain, its functions and the nervous system. 

Brain & Behavior: An Introduction to Biological Psychology Third Edition Edition

by Bob L. Garrett (Author)

ISBN-13: 978-1412994323

ISBN-10: 1412994322

http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2157-9032

I meat database of indivdual people, their individual brain area sizes (different people have different brain area sizes, e.g., sizes of frontal specific areas) and their psychological traits, I meant data, not general textbook.

High-Resolution Brain SPECT Imaging in ADHD

Daniel G. Amen, and Blake D. Carmichael 

Hi Li,

Below I am attaching following Journal which talk about the brain size of autism.

An MRI study of brain size in autism.

Piven J1, Arndt S, Bailey J, Havercamp S, Andreasen NC, Palmer P.

Magnetic resonance imaging and head circumference study of brain size in autism: birth through age 2 years.

Hazlett HC1, Poe M, Gerig G, Smith RG, Provenzale J, Ross A, Gilmore J, Piven J.

When is the brain enlarged in autism? A meta-analysis of all brain size reports.

Redcay E1, Courchesne E.

Brain development in autism: early overgrowth followed by premature arrest of growth.

Courchesne E1

Brain overgrowth in autism during a critical time in development: implications for frontal pyramidal neuron and interneuron development and connectivity.

Courchesne E1, Pierce K.

I Hope this all article will help you.

The Paper by Courchesan et al, talks briefly regarding the ASD.

According to the new criteria DSM V its called as ASD.

Thanks

Best,

Sam