The current study is a meta-scientific investigation of infant visual habituation using an exploratory many-analysts design. Independent teams of researchers analyzed a synthesized looking-time dataset merged from ManyBabies projects 1, 3, and 4. The study addressed three research questions concerning the shape of the habituation curve, individual differences in habituation, and the influence of methodological and measurement choices. These questions were developed through a structured roundtable discussion with participating researchers and subsequently finalized by the project leads.

The study focuses on systematically comparing and synthesizing the analytic approaches, results, and conclusions submitted by the analyst teams. Quantitative findings are integrated through single-dataset meta-analyses, where sufficiently comparable estimates can be extracted across teams. This allows the study to examine both convergence in the estimated effects and heterogeneity arising from different modelling and measurement choices. In addition, analysts’ evaluations of statements derived from the submitted conclusions are used to identify findings that receive the strongest agreement across teams. Together, these approaches aim to determine which conclusions about infant habituation appear robust across analyses, while also illustrating how analytic decisions influence the estimation and interpretation of habituation.