Wiles' study

• Using SSRI's vs using CBT

  • SSRI's only work 30% of the time
  • Wiles used SSRI's with CBT to treat depression
  • For treatment-resistant depression
• Aim of Wiles' study

  • To see whether anti-depressants and CBT work in treating depression
• Method of Wiles' study

  • 469 who had been taking SSRI's but still showed signs of depression
  • Group 1- only received SSRI's
  • Group 2- Received SSRI's and 12-18 sessions of CBT
  • They were assessed to see if their depression improved
• Results of Wiles' study

  • Group 1- 22% of people received a 50% reduction in symptoms
  • Group 2- 46% of people received a 50% reduction in symptoms
  • 12 months later, those in group 2 had greater levels of recovery and were less likely to relapse
• Conclusion of Wiles' study

  • CBT is only useful alongside SSRI's
• Evaluation of Wiles' study (1)

  • Weakness
  • Way of assessing severity of depression is flawed
  • Patients had to complete a questionnaire
  • Participants could have shown social desirability
• Evaluation of Wiles' study (2)

  • Strength
  • Has real-life application
  • People with depression can receive more effective treatment using CBT and SSRI's
• Evaluation of Wiles' study (3)

  • Weakness
  • High drop-out rate
  • 16% of people dropped out
  • If people remained, results could have been different