Skip to main content Accessibility help
×
Home
Hostname: page-component-544b6db54f-lmg95 Total loading time: 0.302 Render date: 2021-10-21T03:42:14.341Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": true, "newCiteModal": false, "newCitedByModal": true, "newEcommerce": true, "newUsageEvents": true }

Holzinger's HC Revised

Published online by Cambridge University Press:  01 August 2014

Gordon Allen*
Affiliation:
Division of Biometry and Epidemiology, National Institute of Mental Health, US Department of Health, Education and Welfare, Rockville, Maryland
*
NIMH, 5600 Fishers Lane, Rockville, MD 20857, USA

Abstract

HTML view is not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The formula H′C = 1 − CDZ/CMZ is suggested as a better summary of twin concordance data than the familiar Holzinger concordance formula, HC = (CMZ − CDZ)/ (1 − CDZ). The new formula better estimates degree of genetic determination, G, as calculated from a threshold model, but never exceeds unity, as G sometimes does. For high concordance rates, if CMZ + CDZ > 1, HC, may be more useful than either G or H′C.

Type
Research Article
Copyright
Copyright © The International Society for Twin Studies 1979

References

1.Holzinger, KJ (1929): The relative effect of nature and nurture on twin differences. J Educ Psychol 20:241248.CrossRefGoogle Scholar
2.Smith, C (1974): Concordance in twins: Methods and interpretation. Am J Hum Genet 26:454466.Google ScholarPubMed
You have Access
7
Cited by

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Holzinger's HC Revised
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Holzinger's HC Revised
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Holzinger's HC Revised
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *