INSTANTANEOUS SAMPLING (On the instant of time)

1
INSTANTANEOUS SAMPLING(On the instant of time)

• 1 2 3 4 5 6 7
• Teacher smiles at child / / / /
• Child smiles at teacher / /
  / /
• Teacher smiles at parent / / / /
• Parent smiles at teacher / / / /

INTERVAL RECORDING(What has happened in the
previous time period)