Bias #1: Confirmation
Confirmation bias is one of the known problems of Wikipedia. (In an ideal world, Wikipedia would be bias-free. Instead, we live in this world. ;) Put simply: Editors sometimes favor info that confirms their preexisting ideas. This leads them to give more weight to sources that support those ideas and downplay evidence that says otherwise.
Bias #2: Selection
Selection bias is one of the known problems of Wikipedia. (In an ideal world, Wikipedia would be bias-free. Instead, we live in this world. ;) Put simply: Editors sometimes select sources or topics that interest them.
Bias #3: Negativity
Negativity bias is one of the known problems of Wikipedia. (In an ideal world, Wikipedia would be bias-free. Instead, we live in this world. ;) Put simply: Editors sometimes give more weight to negative info, including failures and criticism.
Bias #4: Recency
Recency bias is one of the known problems of Wikipedia. (In an ideal world, Wikipedia would be bias-free. Instead, we live in this world. ;) Put simply: Editors sometimes give more weight to recent events.
