A clinical psychologist studying Obsessive-Compulsive Disorder (OCD) wanted to investigate the relationship between the frequency of checking rituals and the severity of obsessive doubts. She administered two standardized psychometric scales to 10 patients currently undergoing treatment.

One scale measured the frequency of checking rituals (e.g., checking locks, light switches). A high score (out of 50) indicated extremely frequent physical compulsions.

The other scale measured the frequency and persistence of intrusive, obsessive doubts (e.g., fear that a door was left unlocked). A high score (out of 50) indicated intense and persistent obsessive thoughts.

The results for each patient are shown in the table below:

Table 1: Checking rituals score and obsessive doubts score for each patient

Patient	1	2	3	4	5	6	7	8	9	10
Checking rituals score	15	22	18	31	29	35	40	38	44	47
Obsessive doubts score	12	25	19	28	32	37	39	42	41	49

Which of the following best describes the clinical classification of the characteristic measured by the obsessive doubts score?

One scale measured the frequency of checking rituals (e.g., checking locks, light switches). A high score (out of 50) indicated extremely frequent physical compulsions.

The results for each patient are shown in the table below:

Table 1: Checking rituals score and obsessive doubts score for each patient

Patient	1	2	3	4	5	6	7	8	9	10
Checking rituals score	15	22	18	31	29	35	40	38	44	47
Obsessive doubts score	12	25	19	28	32	37	39	42	41	49

Which of the following best describes the clinical classification of the characteristic measured by the obsessive doubts score?

Characteristics of phobias, depression and OCD

Question 17

Markscheme

Characteristics of phobias, depression and OCD

Question 17

Markscheme

Characteristics of phobias, depression and OCD

Question 17

Characteristics of phobias, depression and OCD Questions

Characteristics of phobias, depression and OCD

Question 17

Characteristics of phobias, depression and OCD Questions