Final answer:
Online samples recruited from the internet are often argued to be non-representative due to demographic biases and non-random sampling methods.
Step-by-step explanation:
Online samples recruited from the internet are often argued to be non-representative of the general population due to various reasons. One reason is that internet users are more likely to be white, young, and middle class, leading to a lack of diversity in the sample. Another reason is that women are less likely than men to participate in online social research, creating a gender bias in the sample. Furthermore, online researchers often use self-selected sampling methods, where only those who choose to respond participate, leading to a non-random sample that may not accurately represent the entire population.