in some cases, racial prejudices/ gender stereotypes held by jurors can influence how willing they are to believe testimony - Kaufmann et al found that jurors paid more attention to emotions displayed by rape victim's testimony than content, Brodsky et al found that jurors believed witness if they were likeable/ confident/ trustworthy;
factors such as class, age, appearance, demeanor, accent, personality affect wight jury gives to testimony affecting the outcome of case