Description: Segment 1 Grantham-McGregor introduces her lecture. She describes the history of research into childhood malnutrition and shows still images of a shanty town with poor children. She discusses the difficulties of finding the origin of poor mental development in a child. Time start: 00:00:00:00 Time end: 00:05:44:00 Length: 00:05:44:00 Segment 2 Grantham-McGregor shows a table which lists the various classifications of malnutrition. A further graph is shown which plots mental development against sickness and health in children. A study into the activity leves of a group of Mexican children, with and without nutritional supplements, are shown. She also refers to a study of a malnourished child who was adopted into a wealthy family. Time start: 00:05:44:00 Time end: 00:11:52:00 Length: 00:06:08:00 Segment 3 A chart comparing the heights of children in developing countries is shown. A naked photograph of a child with kwashiorkor is shown. Time start: 00:11:52:00 Time end: 00:15:30:00 Length: 00:03:38:00 Segment 4 We see photographs of a malnourished infant, then a table listing mental development complications following childhood marasmus. A table is used to explain the various research strategies to determine the long-term effects of malnutrition on mental development. A further table shows mental development in supplemented and non-supplemented children. Time start: 00:15:30:00 Time end: 00:23:28:00 Length: 00:07:58:00 Segment 6 Grantham-McGregor sums up the lecture referring to various tables listing results of studies into nutritional supplementation and mental development. The earlier photograph of the naked infant with kwashiorkor is shown. Time start: 00:31:30:00 Time end: 00:41:05:24 Length: 00:09:35:00