Which attribute is a common block to accomplishment?

Which of the following is a significant problem in confirming a diagnosis of somatic symptom disorder?

a. Patients don't always tell the truth about symptoms. b. A true somatic illness will often be detected only later, after medical treatment has been exhausted. c. There is no objective measure of a person's pain. d. Somatic symptom disorders overlap substantially with mood disorders.

Which gestalt principle refers to the perceptual rule that lines and other objects tend to be continuous, rather than abruptly changing directions?

a. Figure-ground b. Continuity c. Proximity and similarity d. Psychophysics