Types of experiments

• What are the types of experiments mentioned?

  Laboratory, Field, Quasi, Natural
• What does a laboratory experiment involve?

  Manipulating the IV while measuring the DV
• What are the conditions of a laboratory experiment?

  Conducted under controlled, artificial conditions
• What are the strengths of laboratory experiments?

  High control over variables and easy to replicate
• What are the limitations of laboratory experiments?

  Demand characteristics and low ecological validity
• What is a field experiment?

  Conducted in a natural environment
• How is the IV treated in a field experiment?

  IV is manipulated by the researcher
• What is a key strength of field experiments?

  High ecological validity and fewer demand characteristics
• What are the limitations of field experiments?

  Unethical due to lack of consent and privacy invasion
• What defines a quasi-experiment?

  IV is not deliberately manipulated
• What is a strength of quasi-experiments?

  Allows research where IV can't be manipulated
• What is a limitation of quasi-experiments?

  Cannot demonstrate causal relationships
• What characterizes a natural experiment?

  IV is naturally occurring
• What is a strength of natural experiments?

  Investigates real problems with high ecological validity
• What is a limitation of natural experiments?

  Threat to internal validity due to extraneous variables
• What is the scenario described in the school reading scheme study?

  One class uses a new reading scheme
• How are the children's reading ages assessed in the study?

  Using a standardized test at intervals
• How is the score calculated for each child in the study?

  Current reading age minus original reading age