Both indirect reciprocity and costly signaling depend on reputation value and tend to make similar predictions.
bˈoʊθ ˌɪndɚɹˈɛkt ɹᵻsɪpɹˈɑːsᵻɾi ænd kˈɔstli sˈɪɡnəlɪŋ dᵻpˈɛnd ˌɔn ɹˌɛpjuːtˈeɪʃən vˈæljuː ænd tˈɛnd tə mˌeɪk sˈɪmɪlɚ pɹɪdˈɪkʃənz.