One recent study (tracking over 265 kids of potty training age for 12 months or more) found that children did not show many signs until after their second year (Schum et al 2002). For instance, most children did not show an interest in using the potty until after 24 months.
It was a Southern sweep for Hillary Clinton. She racked up victories in seven states on Super Tuesday, dominating the South, but Bernie Sanders notched four wins of his own. Clinton was declared the victor in Texas, Georgia, Virginia, Alabama, Arkansas, Tennessee, and Massachusetts. She also won American Samoa. Sanders won his home state of Vermont, Oklahoma, Minnesota and Colorado.
How many states did Trump win? The outspoken Republican won 30 states including the key swing states Florida, Ohio and North Carolina. Mrs Clinton won 20, the majority of them in the north-east of the country including New York, New Jersey and New Hampshire.