A: A fourth cousin is someone in a family who shares the same great-great-great-grandparents. First cousins share the same grandparents and second cousins have the same great-grandparents. Ordinal numbers of cousins are in the same generation as each other.
8 to 10 years-Should not be left alone for more than 1Â½ hours and only during daylight and early evening hours. 11 to 12 years-May be left alone for up to 3 hours but not late at night or in circumstances requiring inappropriate responsibility. 13 to 15 years-May be left unsupervised, but not overnight.
Between the ages of 9 and 12, you can leave a child alone for up to two hours. - NBC Augusta.com 12 years of age appears to be the most common recommendation. Below in Related Links is an article entitled Home Alone Children Legal Age Limits which provides a state by state comparison with references.