Bedtime procrastination, a 67% cannabis figure, anxious attachment: how well do you know this week's psychology news?

Seven questions from this week's psychology research and news: sleep, attachment, parenting and mental health. About habits and facts, not medical advice.

1. What is it called when parents scroll on their phones after putting the kids to bed, delaying their own sleep?
2. What treatment did Ted Scheinman, a Smithsonian editor, use to beat his decade-long depression?
3. How many brain imaging studies were analysed in the review that found brain changes behind sleep disorders?
4. What does a new study show about anxiously attached people when their partner doesn't apologise after an argument?
5. In the study of nearly 17,700 US adults, what share of people using almost every form of cannabis met the criteria for a substance use disorder?
6. According to a US study, what is punitive, low-warmth parenting associated with in teenagers?
7. According to new research, who shows the highest level of left-wing authoritarian behaviour?