Measurement equivalence in probability and nonprobability online panels

Nonprobability online panels are commonly used in the social sciences as a fast and inexpensive way of collecting data in contrast to more expensive probability-based panels.

Introduction

For over a decade, there has been a prominent rise in the use of nonprobability online panels for survey data collection (Callegaro, Baker et al., 2014). In contrast to traditional probability-based surveys, where units are directly sampled...