🌐EnglishEnglishDeutschРусскийไทยEntityQ4530262· pop 7· linked from 54 articlesecological validityrelevance of a study's variables and conclusions to real-world contextAvailable in 7 languagesDeutschРусскийArmenianUkrainianzh_yueไทยvia Wikidata sitelinks · CC0Connectionsdigital object identifierEntityInternational Standard Serial NumberEntityCategoriesValidity (statistics)