Children as young as 3 can be given IQ and ability tests. Children whose IQ scores are at or above 130 are usually considered gifted (the range for average intelligence is 85 to 115). Sometimes a child with an IQ score of 120 will qualify for a gifted class.igns of giftedness in a preschooler. Your 2- to 4-year-old may be gifted if she has some of these characteristics: 1  Has a specific talent, such as artistic ability or an unusual ease with numbers.
Yes, lack of sleep can cause itchy eyes. Itchy eye is a major symptom of inadequate tear production. If you don't have enough sleep, you body will be very dry and result in stopping produce tears. In that case, dry eyes occurs.
To this, I would add melatonin, which is both a hormone and an antioxidant: 1  Magnesium deficiency can cause insomnia. 2  Lack of potassium can lead to difficulty staying asleep throughout the night. 3  Vitamin D deficiency has been linked to excessive daytime sleepiness.