Purpose of Review <p>Compulsive buying-shopping disorder (CBSD) and problematic social network use (PSNU) seem to be interwoven due to social commerce. According to the I-PACE model, they share affective and cognitive functions, but this has not yet been investigated. Conceptually, these mechanisms can be classified along the spectrum of impulsivity and compulsivity, whereby impulsive drives can give way to potentially compulsive behavioral patterns. Clarifying the extent to which impulsivity and compulsivity are transdiagnostic features in CBSD and PSNU is therefore a central starting point for this review.</p> Recent Findings <p>No experimental studies have directly compared CBSD and PSNU regarding affective and/or cognitive functions. However, evidence from reviews on experimental designs indicates similarities in affective and cognitive functions, and in impulsivity and compulsivity as transdiagnostic features.</p> Summary <p>The underlying original experimental studies are limited, and the role of impulsivity and compulsivity in the course of the addiction process needs further investigation. To assess potential similarities and differences in affective and cognitive functions, and in impulsivity and compulsivity, systematic investigations with direct comparisons between CBSD and PSNU are needed.</p>