The unconscious as a bank of anchored emotional reactions is a set of emotional reactions associated with various stimuli (anchors). The established associative connections work automatically, before and without any awareness.
The Bank of Anchored Emotional Responses and the Reactive Mind
Both positive and negative emotional responses anchor and work, but positive emotional responses are usually perceived as normal, natural, and unattractive.
A child is a typical positive anchor, and a positive reaction to it (joy, tenderness, admiration, desire to help) is, as it were, self-evident.
If a negative emotional reaction (fear, fright, confusion) is anchored and triggered, this disrupts normal life activity, attracts attention and causes a desire to eliminate this reaction.
This is why the reactive mind is described in Dianetics as a set of anchored exclusively negative emotional reactions.