Representativeness Note on the of the Youth Talks samples A sample is said to be representative if it proportionally reflects the attributes of a population (e.g., gender, age, location, education, income). Individual responses are likely to be a function of these attributes and therefore, when studying opinions, out-of-sample generalisations can only be made from a representative sample. Youth Talks (YT) is a convenience sample: participants have been included based on their accessibility and their willingness to participate. It may therefore not be fully representative of the 15- to 29-year-old population. Read more Read more To assess this possibility, we compare the share of (possible to identify) 15- to 24-year-old people who identify the most with “being a part of the world” in YT with the counterpart share in the probability-based and nationally representative samples provided by the Changing Childhood Project (CCP) for 21 countries. For most countries, the results are very similar, keeping in mind that the margin of error is +/- 4% (at the 95 percent confidence level) for CCP answers. Overall, these results suggest that YT is a valuable tool not only to estimate treatment effects but also to get a rough idea of the prevalence of an opinion in a given population. These findings add substantial credibility to the Youth Talks initiative. The comparative representativeness of our sample demonstrates that even though it is a convenience sample, it still holds considerable weight when aligned against probability-based and nationally-representative samples like those of the Changing Childhood Project. This representativeness significantly bolsters the validity of our results. It imparts a degree of confidence that the insights and trends we uncover in this report are not mere artefacts of a self-selected group of participants, but could potentially reflect a broader sentiment among youth. This robustness of our data provides a solid basis for researchers to delve deeper into the issues and themes surfaced in this report, helping them to gain a more accurate understanding of the perspectives and priorities of youth today. For further details about the methodology used to collect and analyze the data, please see the methodology note.