We are looking for healthy adult volunteers who can participate in a 25-min online experiment to judge the pitch pattern of numerous vocal sound files.

We are looking for people who:

• Are age 18 or older
• Are native English speakers
• Have not had formal training in any tonal languages
• Have not lived in a tonal language speaking country for over 3 months
• Are below native level fluency for any other languages spoken
• Have no hearing problems in everyday life
• Able to participate one on-line test session for 25-min
• Able to do the testing session in a quiet and secured room with headphones

The session would involve answering a simple questionnaire about your background, followed by audio materials of short voice samples whose pitch patterns you will be asked to judge.

You will receive a $10 Amazon gift card for your participation.

If you are interested in participating. please email the experimenter with your language background to proceed with the study:
Bernard Wang (berneezy@ccrma.stanford.edu)