"Dr. Alfred Adler, an Austrian psychoanalyst, first brought the effect of birth order to light. He suggested that birth order has a strong affect on a child’s character. Dr. Adler was a middle child himself. Middle children often feel left out and invisible, a contrast from their older and younger siblings. Middle children, often feel as though they have nothing special that is just “theirs.”
"It is not uncommon for middle children to also feel an amplified longing for adult attention. Children affected by middle child syndrome sometimes even exhibit disruptive behavior in an attempt to attract the attention of parents, teachers and others as a result of feeling overshadowed."
I don't know how much I believe in this type of thing other than as a broad generalization- but regardless of their birth order, this seems like it could describe the general population of Los Angeles. Am I right?