Howard (2016) examined whether dogs would respond to different types of words (positive versus neutral) depending on intonation (positive versus neutral). He found that dogs overall responded more to words spoken in a positive intonation than in a neutral intonation, but that the dogs did not respond differently to the types of words themselves. Most interestingly, he found that the dogs responded most to the positive words spoken in a positive intonation, compared with any other condition.
Identify the significant and not significant results of Howard's (2016) study.significant result:
main effect of intonation
word type × intonation interaction