Ibrahim A Mabulla
Biographic Data
| ID | 77604 |
|---|---|
| NAME | Ibrahim A Mabulla |
| GIVEN NAMES | Ibrahim A |
| FAMILY NAME | Mabulla |
| SIGNATURE | MABULLA I A |
| AFFILIATIONS | University of Dar es Salaam |
| VERIFIED | No |
| TOTAL WORKS | 15 |
| TOTAL CITATIONS | 51 |
| AUTHOR COUNT | 15 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2017 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 5 |
First recorded use of cage traps by the Tanzanian Hadza
While hunting is a critical subsistence strategy for the Tanzanian Hadza, reports of trapping have traditionally been minimal. Snare trapping of small ungulates and terrestrial birds is noted in rare cases, but most meat is acquired through encounter hunting, ambush hunting or nest predation. Except for these sporadic reports of snaring, other types of trapping are absent and cage trapping has, to our knowledge, never before been documented in ov…
Vaccine Knowledge and Acceptance Among Hadzabe Hunter‐Gatherers in Tanzania
OBJECTIVES: Vaccines are highly successful in preventing disease, but misinformation has fueled vaccine hesitancy globally, thereby reducing immunization rates and weakening herd immunity. Vaccine knowledge and hesitancy among hunter-gatherers is a crucial area of research and intervention, as their mobile lifestyle exacerbates other challenges, such as marginalization and medical mistrust. METHODS: In our exploratory study, we surveyed 91 Hadzab…
Height and integration in proximity networks among Tanzanian Hadza men
In recent years there has been much interest in investigating the extent to which social status or prestige are related to an individual's degree of integration in social networks. It has been shown that, among hunter‐gatherers, social characteristics of an individual based on social status or prestige, such foraging reputation, friendship popularity, and pro‐social reputation, can influence the extent to which an individual is embedded in a soci…
Hearing Prosocial Stories Increases Hadza Hunter-Gatherers' Generosity in an Economic Game
Harm Avoidance and Mobility During Middle Childhood and Adolescence among Hadza Foragers
The Life History of Learning Subsistence Skills among Hadza and BaYaka Foragers from Tanzania and the Republic of Congo
Aspects of human life history and cognition, such as our long childhoods and extensive use of teaching, theoretically evolved to facilitate the acquisition of complex tasks. The present paper empirically examines the relationship between subsistence task difficulty and age of acquisition, rates of teaching, and rates of oblique transmission among Hadza and BaYaka foragers from Tanzania and the Republic of Congo. We further examine cross-cultural …
The relationship between perceived friendship and proximity networks among Tanzanian Hadza
In humans, measures of social integration are usually based on self-reported friendships and interview-derived data. However, such measures do not take into account the actual number of social contacts an individual has, a variable that has been shown to have significant impacts on an individual's health and well-being. In recent years advances in 'bio-logging' - an automated system that registers an individual's (physical) position relative to o…
Who teaches children to forage? Exploring the primacy of child-to-child teaching among Hadza and BaYaka Hunter-Gatherers of Tanzania and Congo
Postpartum Maternal Mood Among Hadza Foragers of Tanzania
To the hunter go the spoils? No evidence of nutritional benefit to being or marrying a well‐reputed Hadza hunter
OBJECTIVES: The incentives underlying men's hunting acquisition patterns among foragers are much debated. Some argue that hunters preferentially channel foods to their households, others maintain that foods are widely redistributed. Debates have focused on the redistribution of foods brought to camp, though the proper interpretation of results is contested. Here we instead address this question using two nutritional variables, employed as proxies…
Status does not predict stress
Changes in Juvenile Foraging Behavior among the Hadza of Tanzania during Early Transition to a Mixed-Subsistence Economy
Inter- and intra-cultural variation in learning-through-participation among Hadza and BaYaka forager children and adolescents from Tanzania and the Republic of Congo
We examined cross-cultural variation in children’s learning-through-participation in economic work in two forager societies; the Hadza of Tanzania and the BaYaka of the Republic of Congo. We used observational data from 46 Hadza (41% female) and 65 BaYaka (48% female) children and adolescents between the ages of 3 and 18; interview data from 73 Hadza (49% female) and 52 BaYaka (56% female) adults; and ethnographic observations from both populatio…
Hadza sleep biology
OBJECTIVES: Cross-cultural sleep research is critical to deciphering whether modern sleep expression is the product of recent selective pressures, or an example of evolutionary mismatch to ancestral sleep ecology. We worked with the Hadza, an equatorial, hunter-gatherer community in Tanzania, to better understand ancestral sleep patterns and to test hypotheses related to sleep segmentation. METHODS: We used actigraphy to analyze sleep-wake patter…
The evolution of human sleep
The Life History of Learning Subsistence Skills among Hadza and BaYaka Foragers from Tanzania and the Republic of Congo
Aspects of human life history and cognition, such as our long childhoods and extensive use of teaching, theoretically evolved to facilitate the acquisition of complex tasks. The present paper empirically examines the relationship between subsistence task difficulty and age of acquisition, rates of teaching, and rates of oblique transmission among Hadza and BaYaka foragers from Tanzania and the Republic of Congo. We further examine cross-cultural …
Changes in Juvenile Foraging Behavior among the Hadza of Tanzania during Early Transition to a Mixed-Subsistence Economy
Hadza sleep biology
OBJECTIVES: Cross-cultural sleep research is critical to deciphering whether modern sleep expression is the product of recent selective pressures, or an example of evolutionary mismatch to ancestral sleep ecology. We worked with the Hadza, an equatorial, hunter-gatherer community in Tanzania, to better understand ancestral sleep patterns and to test hypotheses related to sleep segmentation. METHODS: We used actigraphy to analyze sleep-wake patter…
Status does not predict stress
The evolution of human sleep
The relationship between perceived friendship and proximity networks among Tanzanian Hadza
In humans, measures of social integration are usually based on self-reported friendships and interview-derived data. However, such measures do not take into account the actual number of social contacts an individual has, a variable that has been shown to have significant impacts on an individual's health and well-being. In recent years advances in 'bio-logging' - an automated system that registers an individual's (physical) position relative to o…
Hearing Prosocial Stories Increases Hadza Hunter-Gatherers' Generosity in an Economic Game
Harm Avoidance and Mobility During Middle Childhood and Adolescence among Hadza Foragers
To the hunter go the spoils? No evidence of nutritional benefit to being or marrying a well‐reputed Hadza hunter
OBJECTIVES: The incentives underlying men's hunting acquisition patterns among foragers are much debated. Some argue that hunters preferentially channel foods to their households, others maintain that foods are widely redistributed. Debates have focused on the redistribution of foods brought to camp, though the proper interpretation of results is contested. Here we instead address this question using two nutritional variables, employed as proxies…
Hadza sleep biology
OBJECTIVES: Cross-cultural sleep research is critical to deciphering whether modern sleep expression is the product of recent selective pressures, or an example of evolutionary mismatch to ancestral sleep ecology. We worked with the Hadza, an equatorial, hunter-gatherer community in Tanzania, to better understand ancestral sleep patterns and to test hypotheses related to sleep segmentation. METHODS: We used actigraphy to analyze sleep-wake patter…
The evolution of human sleep
Inter- and intra-cultural variation in learning-through-participation among Hadza and BaYaka forager children and adolescents from Tanzania and the Republic of Congo
We examined cross-cultural variation in children’s learning-through-participation in economic work in two forager societies; the Hadza of Tanzania and the BaYaka of the Republic of Congo. We used observational data from 46 Hadza (41% female) and 65 BaYaka (48% female) children and adolescents between the ages of 3 and 18; interview data from 73 Hadza (49% female) and 52 BaYaka (56% female) adults; and ethnographic observations from both populatio…
Who teaches children to forage? Exploring the primacy of child-to-child teaching among Hadza and BaYaka Hunter-Gatherers of Tanzania and Congo
Postpartum Maternal Mood Among Hadza Foragers of Tanzania
To the hunter go the spoils? No evidence of nutritional benefit to being or marrying a well‐reputed Hadza hunter
OBJECTIVES: The incentives underlying men's hunting acquisition patterns among foragers are much debated. Some argue that hunters preferentially channel foods to their households, others maintain that foods are widely redistributed. Debates have focused on the redistribution of foods brought to camp, though the proper interpretation of results is contested. Here we instead address this question using two nutritional variables, employed as proxies…
Status does not predict stress
Changes in Juvenile Foraging Behavior among the Hadza of Tanzania during Early Transition to a Mixed-Subsistence Economy
Harm Avoidance and Mobility During Middle Childhood and Adolescence among Hadza Foragers
The Life History of Learning Subsistence Skills among Hadza and BaYaka Foragers from Tanzania and the Republic of Congo
Aspects of human life history and cognition, such as our long childhoods and extensive use of teaching, theoretically evolved to facilitate the acquisition of complex tasks. The present paper empirically examines the relationship between subsistence task difficulty and age of acquisition, rates of teaching, and rates of oblique transmission among Hadza and BaYaka foragers from Tanzania and the Republic of Congo. We further examine cross-cultural …
The relationship between perceived friendship and proximity networks among Tanzanian Hadza
In humans, measures of social integration are usually based on self-reported friendships and interview-derived data. However, such measures do not take into account the actual number of social contacts an individual has, a variable that has been shown to have significant impacts on an individual's health and well-being. In recent years advances in 'bio-logging' - an automated system that registers an individual's (physical) position relative to o…
Hearing Prosocial Stories Increases Hadza Hunter-Gatherers' Generosity in an Economic Game
Height and integration in proximity networks among Tanzanian Hadza men
In recent years there has been much interest in investigating the extent to which social status or prestige are related to an individual's degree of integration in social networks. It has been shown that, among hunter‐gatherers, social characteristics of an individual based on social status or prestige, such foraging reputation, friendship popularity, and pro‐social reputation, can influence the extent to which an individual is embedded in a soci…
First recorded use of cage traps by the Tanzanian Hadza
While hunting is a critical subsistence strategy for the Tanzanian Hadza, reports of trapping have traditionally been minimal. Snare trapping of small ungulates and terrestrial birds is noted in rare cases, but most meat is acquired through encounter hunting, ambush hunting or nest predation. Except for these sporadic reports of snaring, other types of trapping are absent and cage trapping has, to our knowledge, never before been documented in ov…
Vaccine Knowledge and Acceptance Among Hadzabe Hunter‐Gatherers in Tanzania
OBJECTIVES: Vaccines are highly successful in preventing disease, but misinformation has fueled vaccine hesitancy globally, thereby reducing immunization rates and weakening herd immunity. Vaccine knowledge and hesitancy among hunter-gatherers is a crucial area of research and intervention, as their mobile lifestyle exacerbates other challenges, such as marginalization and medical mistrust. METHODS: In our exploratory study, we surveyed 91 Hadzab…
Psychology (12 works) · Geography (10 works) · Demography (8 works) · Social Psychology (8 works) · Sociology (8 works) · Tanzania (7 works) · Biology (5 works) · Ecology (5 works) · Evolutionary Psychology and Human Behavior (5 works) · Primate Behavior and Ecology (5 works)