This is the protocol for a Campbell review. The primary objective for this review is summarising the effectiveness of video-based interventions (VBI) in promoting prosocial behaviours in a population of young people with autism spectrum disorders (ASD). The research questions employed to fulfil this objective include: (1) Do VBI improve prosocial behaviours in children with ASD? (2) Which social skills and interactive behaviours are most successful? (3) Do VBI generally have successful rates of skill generalisation and response maintenance? (4) Do demographic characteristics (age, gender) of participants influence the effectiveness of VBI's?ASD is a lifelong neurodevelopmental condition found among all races and socioeconomic groups (Wolff, 2004). ASD effects more than 1 in 100 people in the United Kingdom with diagnosis commonly taking place after the age of 3. The prevalence of ASD diagnoses is also rising, which is thought to be a result of a combination of better public awareness and improved assessment methods (Fombonne, 2005). It affects males more frequently than females with a ratio of 5:1 (Russell et al., 2014); due to the prevalence differences between males and females, there is currently a wealth of research primarily concerned with its biological origins (see Abrahams & Geschwind, 2008 for a review).The International Classification of diseases, eleventh edition (ICD-11, 2018) characterises ASD by repetitive and restrictive interests and behaviours, where deficits in social interaction and communication are exhibited. Due to these impairments in social interaction and communication, individuals with ASD face difficulty in expressing their wants and needs which may subsequently result in problem behaviours such as aggression and self-injury as an alternative communication strategy (Chiang, 2008;Murphy et al., 2009). There are a variety of diagnostic and screening tools for Autism including; The Childhood Autism Rating Scale (Schopler et al., 1980); the Pervasive Developmental Disorder Screening Test (Siegel et al., 1986); the checklist for Autism in Toddlers ( Baron-Cohen et al., 1992); the Children's Social Behaviour Questionnaire (Berument et al., 1999); the Autism Diagnostic Interview-Revised (ADI-R) and the Social Responsiveness Scale . Despite their wide-use, efforts are still being made to improve the diagnostic process for individuals displaying ASD symptoms. The ADI-R, which is the current standard of assessment for ASD, takes over 2 h to complete which poses a threat to feasibility for use in clinical settings which are already oversubscribed with extensive waiting times for families and individuals seeking diagnosis. The Autism Screening Questionnaire has demonstrated potential in the diagnostic process, however, each of its 40 items assess either the presence or absence of a given symptom rather than using a quantitative scale to rate symptom severity therefore it has exhibited floor effects in previous research (Rutter et al., 1999). The most recent assessment tool, the Social Responsivene...