Review Biological Psychology: Critical and Sensitive Periods of Development. (https://rotel.pressbooks.pub/biologicalpsychology/chapter/sensitive-and-critical-periods-of-development/)  
What are  ‘critical periods of development’ and ‘sensitive periods of development’?  What is the difference? 
Also, what are ‘Impoverished vs. Enriched Environments’? What are the consequences (see Figure 2.9) (link to chart: https://www.researchgate.net/figure/Critical-Period-from-Prenatal-Development-Phases-Color-of-violet-indicating-most_fig3_361907884)? 
Why is this good to consider looking at human development, along with consideration of the nature versus nurture debate? Speak to these issues based on the text, the Human Development video (https://fod-infobase-com.ccco.idm.oclc.org/p_ViewVideo.aspx?xtid=44909) watched above and as related to the difficult case of Dani (https://www.youtube.com/watch?v=P_IBGS1FQw4&t=79s) start at 1:24. 
APA in-text citations and references are required to the text, one academic source and any other sources used for the discussion.