Observational sampling techniques

• What is impossible without recording film proceedings in observation?

  Recording everything in observation
• Why must we be selective in observation?

  Because we cannot record everything
• What are the two types of sampling in observation?

  • Time sampling
  • Event sampling
• What does time sampling involve?

  Making observations for short intervals
• What is an advantage of time sampling?

  Shows spread of behavior over observation period
• What is a disadvantage of time sampling?

  Small amount of data may be unrepresentative
• What does event sampling involve?

  Recording all relevant behaviors each time they occur
• What is an advantage of event sampling?

  Records all events without time intervals
• What is a disadvantage of event sampling?

  It lumps all behavior together