13.1.4

Control of Eating Behaviour: Leptin

Test yourself

Halaas et al (1995)

Halaas et al (1995) investigated the effect on mice missing the gene that influences the production of leptin.

Illustrative background for Procedure, results & conclusionIllustrative background for Procedure, results & conclusion ?? "content

Procedure, results & conclusion

  • Procedure
    • Laboratory experiment.
    • Diabetic mice were injected daily with leptin.
  • Results
    • After two weeks, the diabetic mice had a 30% decrease in body weight. A follow up with non-diabetic mice reported 12% decrease in body weight.
  • Conclusion
    • Leptin works as an appetite suppression. Leptin levels in the blood increase with fat levels and send a message to the VHM to stop eating.
Illustrative background for EvaluationIllustrative background for Evaluation ?? "content

Evaluation

  • Strengths
    • Controlled, reliable experiment.
    • Practical applications.
  • Limitations
    • Cannot generalise from animals to humans.
    • Ethics.

Jump to other topics

1Social Influence

2Memory

3Attachment

4Psychopathology

5Approaches in Psychology

6Biopsychology

7Research Methods

8Issues & Debates in Psychology (A2 only)

9Option 1: Relationships (A2 only)

10Option 1: Gender (A2 only)

11Option 1: Cognition & Development (A2 only)

12Option 2: Schizophrenia (A2 only)

13Option 2: Eating Behaviour (A2 only)

14Option 2: Stress (A2 only)

15Option 3: Aggression (A2 only)

16Option 3: Forensic Psychology (A2 only)

17Option 3: Addiction (A2 only)

Go student ad image

Unlock your full potential with GoStudent tutoring

  • Affordable 1:1 tutoring from the comfort of your home

  • Tutors are matched to your specific learning needs

  • 30+ school subjects covered

Book a free trial lesson