Early identification and intervention is critical; however, giftedness in the twice-exceptional population is often identified later than in the average population as it is masked by the disability. The disabilities may include auditory processing weaknesses, sensory motor integration issues, visual perceptual difficulties, spatial disorientation, dyslexia, and attention deficits. Recognition of learning difficulties among the gifted is made extremely difficult by virtue of their ability to compensate. Among the signs that the student may be twice-exceptional are apparent inconsistencies between abilities and results, deficits in short-term memory and attention, and negative behaviors such as being sarcastic, negative, or aggressive.