According to Miranda Fricker (2007), a person suffers testimonial injustice when they suffer a wrongful credibility deficit-that is, when their assertions are met with undue skepticism. Fricker holds that "[i]n face-to-face testimonial exchanges the hearer must make some attribution of credibility regarding the speaker" (18, orig. emphasis), and that a credibility deficit occurs if the attributed credibility is below the level suggested by the evidence of the speaker's veracity.Not every instance of credibility deficit is a testimonial injustice. Fricker discusses cases of credibility deficit resulting from innocent error or honest mistake (21-22; 33-34). A credibility deficit can also be justified if a speaker has a poor track record of truthfulness or accuracy, or if it is implausible (or impossible) that they have knowledge of what they are speaking about.However, Fricker is concerned with the kind of credibility deficit that follows a person across a wide range of contexts, and through years or decades of their life. This kind of persistent and systematic credibility deficit constitutes the most significant kind of testimonial injustice. It is usually based in a negative identity-prejudicial stereotype concerning the person's social identity. Fricker defines such a stereotype as:A widely held disparaging association between a social group and one or more attributes, where this association embodies a generalization that displays some (typically, epistemically culpable) resistance to counter-evidence owing to an ethically bad affective investment. (35) She focuses on the prejudices of racism and sexism. But clearly other aspects of identity can be the foci of prejudice, and thus of persistent and systematic testimonial injustice: such as ethnicity, class, nationality, disability, or age.Concerning the last of these, age, it is widely accepted that there is prejudice against the elderly. The term ageism was coined fifty years ago to denote such prejudice (Butler 1969). 1 As yet, there is no discussion of testimonial injustice against the elderly. There is, however, an emerging discussion of testimonial injustice against children. That is my interest here. Some recent authors claim that children