Table 2.

Attentional control scale subscale items and reliabilities.

Attentional control subscales	Attentional control scale questions. Rating scale: 1 = almost never; 4 = always	Coefficient alpha
Attentional focusing	When I need to concentrate and solve a problem, I have trouble focusing my attention. When I am working hard on something, I still get distracted by events around me. It’s very hard for me to concentrate on a difficult task when there are noises around. When I am reading or studying, I am easily distracted if there are people talking in the same room. When trying to focus my attention on something, I have difficulty blocking out distracting thoughts. I have a hard time concentrating when I’m excited about something. When concentrating I ignore feelings of hunger or thirst. After being interrupted or distracted, I can easily shift my attention back to what I was doing before. When a distracting thought comes to mind, it is easy for me to shift my attention away from it.	α = 0.83
Attentional shifting	I can quickly switch from one task to another. It takes me a while to get really involved in a new task. It is difficult for me to coordinate my attention between the listening and writing required when taking notes during lectures. I can become interested in a new topic very quickly when I need to. I have a hard time coming up with new ideas quickly. It is hard for me to break from one way of thinking about something and look at it from another point of view.	α = 0.76
Divided attention	My concentration is good even if there is music in the room around me. When concentrating, I can focus my attention so that I become unaware of what’s going on in the room around me. It is easy for me to read or write while I’m also talking on the phone. I have trouble carrying on two conversations at once. It is easy for me to alternate between two different tasks.	α = 0.73
Attentional control – total	-	α = 0.90