--Original published at Rachel Bickelman's PSY 105 Blog
Some memories are stronger than others, my theory behind incorporates the social clock and a biological theory which considers both neurological connections and physiological consequences of events.
The social clock could contribute to some memories being more powerful than others. Milestones in life are deemed part of the social clock when their happenings are determined by culturally preferred timing of social events. Examples include marriage, retirement, and parenthood. Since these events are seen as important and often are discussed among peers, it could contribute to those memories being stronger because the brain is frequently replaying those specific memories. Additionally, because one knows, consciously or unconsciously, the event is seen as culturally important, they may unintentionally create a strong memory of the event.
Another theory towards stronger memories could be that the brain’s neuron connections are stronger when more senses are engaged. This could be influenced by the body’s physiological aspect/condition and emotions that are attached to the event. Emotions and feelings that trigger chemicals and hormones such as adrenaline, fight or flight and dopamine, feeling happy, could create a stronger memory because the brain enacted a strong chemical sequence in the body.
To conclude, my theory behind strong memories is influenced by both the social clock and physiological and emotions experienced during the time of the memories’ creation.

