What is considered the most rigorous type of evaluation used by researchers to determine whether a therapy "works"?

Sarah leaves a store after not making a purchase and thinks, "The clerk barely looked at me. She really hates me." Which of the following cognitive distortions is she displaying by this thought process?

a) personalizing b) catastrophizing c) mental filtering d) jumping to conclusions

An adult who has an anxious, avoidant attachment style would likely have difficulties with which aspect of relationships?

a. fidelity b. roles c. self-image d. trust