All articles in Stats (ISSN 2571-905X) Vol 7, Issue 1, are now freely available to access, read and download: https://brnw.ch/21wJoSA COVER STORY: Social and behavioral scientists use structural equation models (SEMs) as mathematical representations of complex theories involving multivariate data. Sophisticated sampling designs can yield dependencies that complicate standard SEMs, requiring more advanced estimation methods. Round-robin designs have a social-network structure, in which every memb