The experimenters also asked the participants to note how long imagery if any lasted. After that they were then instructed to think about something positive and also note any imagery or verbal thoughts going through their minds at that moment; length of any imagery experienced was also noted. Results showed that imagery was less prevalent and had a shorter duration in the GAD group as opposed to the control group. Another conclusion was the GAD participants were probably already accustomed to dealing with worry predominantly through verbal thought.
The third study was one carried out by Daniel R. Evans and Suzanne C. Segerstorm and included 199 undergraduate, psychology students who were asked to fill out questionnaires that revolved around mindfulness, emotions, rumination, worry, positive thoughts and individual response styles. The aim of this study was to see if mindfulness has any effect on worry (Evans & Segerstorm, 2010). Results showed that people who were more mindful had lower incidence of worry episodes and repetitive thought in general. The fourth study I examined was done by William E. Kelly and consisted of 140 undergraduate students who were given a worry questionnaire and a sense of humor questionnaire. The aim of the study was to examine the relationship between sense of humor and worry (Kelly, 2002). Kelly also noted that at the time of his study there was no research on this topic at the time. Results supported Kelly's hypothesis that people who have a sense of humor worry less.
Critique of the Book's Research.
The outside research I chose to do the analysis on the book catered to the areas I considered most important in the book. The first study on keeping a diary matched closely to what Hazlett-Stevens (2005) mentioned in her chapter on monitoring worry (p.41). The only thing I would change about this section in the book is to add a specific time frame for the monitoring so that readers can actively pursue it instead of putting it off or prolonging the activity.