Karen Horney was born Karen Danielsen on 16 September 1885 in Blankenese, Germany, near Hamburg. Her father, Berndt Wackels Danielsen (1836-1910), was Norwegian but had German citizenship. He was a ship's captain in the merchant marine, and a Protestant traditionalist (his children nicknamed him "the Bible-thrower", as he did indeed throw Bibles). Her mother, Clotilde, nee van Ronzelen (1853-1911), known as "Sonni", was also Protestant, of Dutch origin.

Horney looked at neurosis in a different light from other psychoanalysts of the time. Her expansive interest in the subject led her to compile a detailed theory of neurosis, with data from her patients. Horney believed neurosis to be a continuous process--with neuroses commonly occurring sporadically in one's lifetime. This was in contrast to the opinions of her contemporaries who believed neurosis was, like more severe mental conditions, a negative malfunction of the mind in response to external stimuli, such as bereavement, divorce or negative experiences during childhood and adolescence. This has been debated widely by contemporary psychologists. Horney believed these stimuli to be less important, except for influences during childhood. Rather, she placed significant emphasis on parental indifference towards the child, believing that a child's perception of events, as opposed to the parent's intentions, is the key to understanding a person's neurosis. For instance, a child might feel a lack of warmth and affection should a parent make fun of the child's feelings. The parent may also casually neglect to fulfill promises, which in turn could have a detrimental effect on the child's mental state. From her experiences as a psychiatrist, Horney named ten patterns of neurotic needs. These ten needs are based upon things which she thought all humans require to succeed in life. Horney modified these needs somewhat to correspond with what she believed were individuals' neuroses. A neurotic person could theoretically exhibit all of these needs, though in practice much fewer than the ten here need to be present for a person to be considered a neurotic.

Using a quote from the above article, answer the following question: what is a hallmark of this theory?
Horney believed these stimuli to be less important, except for influences during childhood.