Table 5 Principal component analysis including the DSM-IV derived inattentiveness symptoms and the four new symptoms proposed in DSM-V

ADHD- item 1- makes careless mistakes

.676

-.045

ADHD- item 2- sustaining attention

.780

.079

ADHD- item 3- listening when spoken to

.486

.122

ADHD- item 4- follows instructions

.551

.322

ADHD- Item 5- organizing tasks

.686

.386

ADHD-Item 6 - sustained mental effort

.667

.192

ADHD- item 7- loses things

.414

.341

ADHD- item 8- distracted by extraneous stimuli

.450

.367

ADHD- item 9- forgetful in daily activities

.579

.057

ADHD- item 19- act without thinking

.275

.565

ADHD- item 20- impatient

.069

.785

ADHD- item 21- uncomfortable doing things slowly and systematically

.136

.793

ADHD- item 22- difficult to resist temptations or opportunities

.058

.750