As women age, her daughter replaces her husband

Women, as they age, shift their primary relationship away from her husband toward her daughters, said a group of international scientist who analyzed 1.95 billion calls and 489 text messages.

They found that women tended to focus more on their relationships with their romantic partner at age 18. But by the time they hit their 40s, women's most important relationship began to shift away from the same-aged male to a female about 25 years or so younger — presumably, her adult daughter.

Men, on the other hand, appeared to be more stable in their mobile communications, the scientists found. The findings, reported by the Los Angeles Times, were released Thursday by the journal Scientific Reports.