Nov 18 1999: A study which aims to provide online marketers with a clearer idea of the profile and spending habits of female Internet users identifies six different psychographic groups.   The study, "The Online Woman: How to Tap Into Her Buying Power" was conducted by researchers from Proctor & Gamble, Harris Interactive and the Women.com Network and had over 15,000 respondents.   The study found that in the average household women control over two thirds, 75 percent, of the finances and are responsible for 80 percent of purchasing decisions. Given these figures and the fact that women now comprise nearly half of the online population in the US, 49.5 percent, this market hugely lucrative.   The groups were as follows: Movers - the most educated, ambitious, upwardly mobile and career orientated, this group buy more online spend more per item. Believers - rural homemakers, care about price and have more than likely never made an online purchase. Explorers - aged 28, love to shop and don't care about price. Other psychographic categories were Movers, Trendsetters and Breadwinners.