Neuropsychology: study of the relationship between behaviour, emotion and cognition on one hand, and brain function on the other.
Clinical neuropsychology(NP): assessing and cognitive, emotional and behavioural function after suspecting brain damage for diagnosis and potential treatment.
Brain damage after trauma, vascular accidents, tumours, toxicity, infections, also (neurodegenerative) diseases, or just ageing.
NP assessment: 'imperfect index of brain function'
Physical differences: brain - Brain plasticity can be affected by: specialized skill acquisition, enrichment, deprivation, education, health, stress, correlates of differing cognitive mechanisms, experience more generally.
Cultural neuroscience: field with focus on factors that affect biologicals and psychological processes that reciprocally shape beliefs and norms shared by groups of individuals.
Physical differences: genetics - Core of nature/nurture interactions!
Heredity: passing on characteristics from parents to children based on genetic material. Although about 99% of genes are fixed, 1% differs across individuals. Genes can have effects that depend on external variables.
Epigenetics: environmental factors cause genes to switch on or off without modification of the DNA sequence. Chemical tags can control genes in specific cells. Epigenetic tags can result from lifestyle choices or specific experience. Some epigenetic tags are hereditary! Part of our genetics that only become available in certain circumstances.
Physiological approach is relatively new! Questions:
The relation between biology and behaviours may depend on the cultural meaningsof behaviours, rather than on the actual behaviours.
Measuring brain function: NP assessment: intelligence; memory; verbal abilities; executive functions; visuo-spatial functions; attention; syndrome-related combinations; general batteries. The scores will be compared to normative data, sometimes with correlations for age or education level.
Culture and NP assessment: Normative data based on very limited subsample WEIRD patients: which is partial and biased.
There are several thousands of cultures, and over 6800 language spoken! Relative differences may vary. Biggest commonality is driven by schooling, science and technology (useful information spreads fast!)
Why would culture affect NP assessment?
Values and meaning: no general agreement on merit responses (what is the right response): eg in the Raven's, do you go for aesthetics or for rules? Attitudes, eg are animals pets or food.
Modes of knowing: individual task vs collective endeavour: why would it matter what I know when I'm part of a collective?
Conventions of communication: interaction: one-way questions, authority; and the type of questions (both in content and way of asking).
Patterns of abilities: Culture prescribes what should be learned, at what age, and by which gender. Results in culture-specific clusters of skills or abilities that 'belong' with a stage of life or role. Tests need to be appropriate for subject's learning opportunities and contextual experiences.
Cultural values: culture dictates what is or is not situationally relevant and significant, or even appropriate. Based on values that are not necessarily shared!
Familiarity
Testing situation: being tested is part of school culture!
Attitudes that facilitate good performance: motivation, purpose
Elements used in testing: eg objects, situations, stories: animals, foods, plants, natural phenomena.
Strategies needed to solve task: eg spelling is an artificial task in language with a phonological writing system; eg cardinal direction (north, south, east, west) not used in all cultures.
Language: Linguistic relativity: Whorfian hypothesis: language influences thought. Language use and the meaning differs with a cultural and subcultural background. Correlates strongly with education level, testing language often formal. Important to make test instructions understandable and appropriate!
Education: Accounts for up to 50% of variance in IQ tests, 0.6-38% in NP tests! Double role: increases knowledge of test content; increases familiarity with testing setting and strategies. Schooling increases test performance, smaller increases with each year of schooling.
Illiteracy: not being able to read or write
Functional illiteracy: reading and writing is inadequate "to manage daily living and employment tasks that require reading skills beyond a basic level".
Literacy is generally higher in men than in women. 2/3 of illiterates are women. In Europe, North-America and Australia, literacy is closely tied to poverty: functional illiteracy can be high in specific groups!
Research in other countries: US, Canada, Mexico, Bermuda, Italy, Norway, and Switzerland. Investigated function: document literacy, prose literacy, numeracy and problem solving. All countries have significant numbers of people with low skills: between 1/3 and 2/3 do not attain minimum level demanded by increasingly complex knowledge economy. Especially the US and Italy show a large range in skills. Lower document literacy and numeracy also associated with poorer health. Interpreted as causing difficulties to navigate the health care system. Proportionally similar health rating between countries.
Learning to read reinforces certain cognitive abilities, such as verbal memory, phonological awareness, and visuospatial discrimination. Illiterate individual show lower scores on: naming tasks, verbal fluency, verbal memory, visuo-perceptual abilities, conceptual functions and numerical abilities.
Illiteracy: More difficulty copying nonsense figures or words. Concrete, real-life situations much easier to process! True for all kinds of tasks: naming, memory, visuospatial, etc. Standard test materials put illiterates at a disadvantage!
Minorities within a culture: different ethnic groups in one country; after migration (especially first-generation); groups with no country. In NP assessment, testing is approached from a majority culture perspective!
Six potentially distinguishing variables:
Necessity for specific tests and norms - Indication of functional level depends on relative scores. But: not clear hoe specific this needs to be: for each language? Cultural region? Educational level? SES level? Depends on cognitive function in question! Understanding the underlying variables is at least as important as having assess to specific norms.
Potential psychological consequences of being a member of a minority group:
Acculturation | Strong identification with host culture | Weak identification with host culture |
Strong identification with heritage culture | Integration/alternation Positive attitudes toward host and heritage culture; participate in host culture while maintaining traditions of heritage culture; most successful strategy - least prejudice and greatest social support. | Separation
|
Weak identification with heritage culture | Assimilation
| Marginalization Negative attitudes toward host and heritage culture; no effort to engage with host and heritage cultures; rare and lest successful strategy; may characterize third culture kids |
Discrimination and othering - Stereotypes and prejudice can lead to discrimination, which can be a large problem in contexts where there is intercultural interaction. Discrimination can affect the acculturation process in two ways:
Discrimination has a range of negative effects on (mental) health, including High blood pressure; Heart problems; Low birth weight; Depression; Somatization; Risky behaviours such as smoking and alcohol use.
Discrimination is very hard to study. It can be very subtle (othering). Incidents may not always be remembered or interpreted as discrimination. Effects may be moderated by coping and social support. Still an active research field, but many studies now point in this same direction of discrimination as a health risk.
Summary part 1 - Neuropsychological assessment aims to provide an index of brain function. Physical differences may emerge based on hereditary and experiential factors. Culture can affect NP assessment in multiple ways: Patterns of abilities, cultural values, familiarity, language, education. Illiteracy affects the development of cognitive abilities. Being a member of a minority group can affect various aspects of well-being: Discrimination and other affect mental and physical health.
Neuropsychological practice in a multi-cultural society Social aspects and care needs
MCI and dementia: how to diagnose? What are the obstacles?
Prevalence in different cultural groups Solutions: culture-fair screenings
Aging - Cognitive functions decline with age. Not all! Memory and executive functions deteriorate more than vocabulary and world knowledge. Risk of mild cognitive impairment (MCI) and dementia increases with age.
MCI - Mild cognitive impairment: Cognitive changes that are serious enough to be noticed, but not severe enough to interfere with daily life or independent function. Most common subtype of MCI first presents as memory impairment. Progression to dementia in 10 to 15% of afflicted persons per year. MCI as a precursor for dementia.
Dementia: Umbrella term for symptoms caused by neural disorders, especially cognitive symptoms. Most common causes of dementia:
Each have own most prominent symptoms, all interfere with everyday activities. Data come from Western sample!
How do we screen for dementia? - MMSE: Mini-Mental Screening Exam (Maximum score=30, dementia is indicated for scores below 24) --> screening, not diagnosing! Kinds of items: orientation to time and place; naming; registration (responding to prompts); attention and calculation; recall; repetition; complex command (figure).
DSM 5 name for dementia: Major neurocognitive disorder
Prevalence - MCI prevalence = 3.0 - 19.0%, with a risk of developing dementia of 11-33% within 2 years. Dementia prevalence = 5.4 - 6.4% (≥60 years). Not the same everywhere! Related to wealth! Higher prevalence MCI and dementia described for immigrant populations in USA and UK
More dementia in poorer countries: the predictions are that the proportion of people with dementia will increase under low- and middle-income countries.
Migrant groups in the Netherlands - In the Netherlands, 11.1% of the population in 2010 consisted of migrants (8.5% from outside the EU). Turkish, Moroccan and Surinamese people make up 65% of all non-western immigrants in NL (i.e. born abroad to foreign parents). First-generation non-western immigrants are aging: 4% of population in 2013, to 15% in 2039. Native Dutch older group grows a bit less fast: 18% to 28%. Older immigrants in the US show a higher prevalence of risk factors for dementia. Diabetes, cardiovascular disease, obesity, smoking, hypertension, high cholesterol, low SES.
Care experts - Among European dementia experts, 64% find it more challenging to assess dementia in patients from ethnic minorities. Reported problems include: Language proficiency (88%); Presentation of symptoms (84%); Educational level (84%); Lacking assessment tools (68%); Lacking cultural knowledge (44-56%).
Over- and underdiagnoses - Accurate diagnosis: High sensitivity(good true detection) and high specificity(low false detection).
Findings from Denmark: Belief: dementia is underdiagnosed in migrant groups; Finding: in general health care, immigrant groups show different rates of diagnosis than native Danish. Turkish, Pakistani and Ex-Yugoslavian groups (no difference!). Finding: Age effect: overdiagnosis for younger people (<60y) and underdiagnoses for older people. Belief supported, but only for the older group!
Reasons for over and underdiagnoses?
Differences in help-seeking behaviour
Difficulty with the health care system
Assessment and diagnosis
Culture-fair diagnosis - From the first week: culture-fair testing! From the previous part: need to account for cultural values, familiarity, language, different education levels, interpretation of norms, etc
Daily practice in a memory clinic:
Cross-cultural dementia screening (CCD): Developed in Amsterdam, Validated in 2009, norm data from 2013. Instructions in own language; Culture-free/fair items; Nonverbal as much as possible. Domains: Memory, mental speed, executive function
CCD tasks:
Memory: Objects test: remember objects among distractors
Mental speed and divided attention: Dots test: connect objects in order of increasing numbers
Mental speed and inhibition: Sun-moon test: cross-name pictures in own language
Interpreters - CCD developed in 6 languages: Dutch, Turkish, Moroccan- Arabic, Moroccan-Tarifit, Sranantongo, Sarnámi-Hindustani. Interpreters that are not family are preferred. Shameful for patient, covering up by interpreter. Native testers are ideal! Interpreters no longer covered by Dutch insurance since 2012.
CCD evaluation- Total battery:
(MMSE: sensitivity=76%, specificity=.83)
All subtests showed good individual sensitivity and specificity. Strongest predictors of dementia: Objects test B (delayed) and Sun-Moon test B (Interference).
Dementia research in migrant groups - Evidence on dementia prevalence is rare in many regions
Symbol study - Aim: to assess the prevalence of MCI and dementia in community-dwelling migrants ≥ 55yrs, and to map their and their caregivers’ health care use and care needs. Hypothesis: prevalence MCI and dementia for older immigrants =2x prevalence in native Dutch. Large sample of older community-dwelling immigrants was screened with ‘Cross-Cultural Dementia screening instrument’ (CCD) to overcome barriers of culture
Ran from 2010-2013. Participants: Adults from Turkey, Morocco, Surinam or NL over 55, recruited through GP in low SES suburbs -> cross-sectional!
Measures:
Results - Conclusion: MCI and dementia were three to four times more prevalent in the majority of non-western immigrant groups when compared to the native Dutch population. These differences are important for planning and improving healthcare facilities!
Implications - Need for specific care: adjustments in health care institutions. Broad use of culture-fair diagnostic tools: more focus necessary on the reliability of existing tools. Adjustments in care homes: food, activities, languages. Increasing awareness among migrant groups: dementia is stigmatized, affected people do not seek help. With a growing group of elderly migrants, this issue will become increasingly important.
Summary part 2 - With an aging population, there is a growing group of migrants who need neuropsychological care. Some migrant groups show higher indices of predictors of dementia (cf. physical health, education). Dementia can be underdiagnosed but also overdiagnosed. Culture-fair diagnostic tools are needed to provide fitting care. CCD is an instrument developed to have culture-free items, many nonverbal responses. Prevalence of dementia indeed shown to be higher in migrant groups using appropriate diagnostic tools.
Take home points - Clinical neuropsychological assessment is affected by culture in various ways, that each have different solutions! Theoretical considerations include: Neural and cognitive effects of experience (education, SES) and cultural factors that affect specific test outcomes. Clinical considerations should include:
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Lecture 1: Introduction, Methods and DevelopmentHealth and Illness: positive concept of health and negative concepts of disease/ illness/ sickness are defined differently in different cultures!
Culture influences:
Culture can be thought of as a set of implicit and explicit guidelines/information that individuals acquire as members of a particular society or context, regarding, eg how to view the world/ how to experience emotions/ how to behave in relation to other people/ to supernatural forces or gods/ to the natural environment. It also provides a way of transmitting these guidelines to the next generation (enculturation).
Enculturation: a 'lens' through which the individual perceives and understands the world that he inhabits and learns how to live with it. The group or context itself.
Challenges to definitions/ challenges to define cultures:
Multiple levels of culture
(Cross-)cultural psychology
Lecture 2: Cultural transmission, Cross-cultural cognitionCultural variation: differences between cultural groups. Cultures are fluid and dynamic, in most cases changing over time. But cultural ideas and norms don't necessarily emerge to address universal problems. Rathe result from cultural learning. Example: fashion, tertiary level.
Sources of cultural variation: ecological geographical differences are important and can lead to far-reaching consequences. Eg availability of food sources, ease of living in specific habitats, interdependence among groups, etc. Local ecologies influence cultural values and norms and can lead to cultural in different ways: proximal causes vs distal causes and evoked culture vs transmitted culture.
Proximal causes: influenced that have direct and immediate effects. - eg when Spanish conquistadors invading had good armour, allowing a quick victory over the Incans, who lacked such technology.
Distal causes: initial differences that lead to effects over long periods of time. - eg because of sufficient food, people could devote their time to nonfood activities such as creating tools.
Evoked culture: specific environmental conditions evoke specific responses from (all) people within that environment, becoming part of a culture. - eg acting in an intimidating manner when your children are being threatened.
Transmitted culture: cultural information passed on or learned via social transmission or modeling. - eg copying behaviour, clothing, aspects of etiquette, etc, from food-finding to social interaction.
Evoked and transmitted culture are not always clearly separated! Eg more emphasis on physical attractiveness due to greater parasite prevalence, vs parents teaching their children to pay attention to physical attractiveness. Transmitted culture is arguably always involved in maintaining cultural norms, even when evoked cultural responses are also present. Evoked culture based on ecological pressures alone cannot explain cultural variation. Transmitted culture represents situation-specific AND group-specific knowledge.
Transmission of cultural information, how is information transferred
Parallel with biological evolution, the main mechanisms are natural selection: increasing proportions of traits that confer a survival advantage; sexual selection: increasing proportion of traits that confer reproductive advantages. Sometimes conflicting!
Cultural evolution
Similarities with biological evolution: Ideas can be persistent (high survival rate) and ideas can be more prone to being passed around (reproduced more).
Differences: cultural ideas can be transmitted horizontally among peers, not only vertically across generations.
What makes ideas interesting and sticky?
.....read more Lecture 3: Emotions, Motivation and Acculturation StressStarted with Darwin: Emotions and emotional expressions are universal; everyone has the same. Later there was discovered by Ekman & Friesen that there were six basic emotions: happiness, surprise, sadness, disgust, fear and anger.
How did they do the research: They asked different people, who have never met, how they would express certain sentences. These were checked with different societies.
Assessing universality: in particular, pride has been proposed to be universally recognized expression. Pride is different in that it involves much of the body, not just the face: erect posture, head tilted back, slight smile, arms extending away. Even people who are born blind, show this emotion.
What is an emotion: face, posture, subjective feeling, caused by the environment, combination of physiological reaction and cognitive,
Perspectives on emotions
Universality vs cultural variability
The JL theory predicts that emotions should be universal due to physiological similarities of all humans. If JL was right, then emotions would be universal, the same in every human being.
The Two-Factor theory predicts that emotions should vary across cultures because different cultural experiences may lead us to have different interpretations of physiological responses. If the Two-factor theory was right and it would depend on how you would interpret it, then not universal.
Do differences in emotional expressions affect emotional experiences, too?
Do people experience emotions the same? Is there a link with how emotions are expressed and how they are felt? If that is true, then you could either feel the emotion and express it and express the emotion and feel it. If the second thing is the case, then you could influence how you feel.
Facial feedback hypothesis provides one reason to expect cultural variability. The hypothesis proposes that we use our facial expression to infer our emotional state. This suggests that by making a particular emotional expression, we can think that we are experiencing the corresponding emotion. Pencil test:
.....read more Lecture 4: Culture and Body-Image, Life-Style and HealthOverall key points
Commonalities and culture differences in:
Body and lifestyle are influenced by our culture
Note that: Influence of culture on health is very broad and complex. In these notes only some of the relevant topics will be discussed. The main aim is to raise awareness of differences, open mind to variety and views other than those that are so standard to you that you wouldn't even think about them. Differences between individuals from one culture can sometimes be larger than those between cultures.
What is universally attractive? Evolutionary psychologists suggest preferences for visual appearances have evolutionary roots. Communalities across culture in what is perceived as attractive: clear complexion, bilateral symmetry and average features. Signs that you are healthy. People are attracted to healthy mates.
Skin signals health more directly than any other visible aspect. The cosmetics industry provides people with ways to make their complexion look clearer. People have strong aversive reactions to skin conditions. Skin conditions often associated with stigmatization. Example: 2 Nigerian girls with skin disorder were hidden to protect the other children in the family, as marriage with member of family in which the skin disorder occurs is discouraged.
Bilateral symmetry is a marker of health. When an organism develops under ideal conditions its right and left sides will be symmetrical. Genetic mutations, pathogens or stressors in the womb can lead to asymmetrical development. On average, asymmetrical faces are views as less attractive.
Faces with average features are more attractive than faces that deviate from average. Average features are less likely to contain genetic abnormalities and are more symmetrical. We can more easily process any kind of stimulus that is closer to a prototype than one that is further from a prototype. And easy processing is associated with a pleasant feeling that gets interpreted as attractive.
"Average is attractive" does not apply to aspects beyond facial features. This is seen with people's weight, height, muscles, breasts and hips. For such aspects, it's often bodies that depart from average that are seen as more attractive. The kinds of body weights that are perceived to be most attractive vary considerably across cultures.
Body-weight
In 1951, anthropologist and psychologist concluded
.....read more Lecture 5: Intercultural communication in serious illnessThere is no direct explanation but, a serious illness can be explained as a condition that carries a high risk of mortality, negatively impact the quality of life and daily function, and/or is burdensome in symptoms, treatments or caregivers stress.
Examples of serious illnesses: cancer, dementia, heart failure, diabetes, lung diseases.
Importance of communication: The moment patients are diagnosed, they need good communication: what is going on, what are their options, feel they are seen, someone is caring for them (patient and family).
Patient: Priority: complaints; Outcomes: satisfaction, bereavement outcomes, how they're loved ones feel after they died.
Healthcare professionals: Intrinsic motivation: we all have intrinsic motivation for good communication. But it is difficult, especially breaking the bad news. Poor communication is related to burnout.
Communication errors are related with culture.
In the Netherlands there is a lot of focus on what the patient wants, the family comes second. Autonomy: discuss everything with the patient first, and then maybe the relatives. Don't speak about the patient without his/her permission. Tell everything clearly and honestly. The patient decides, not the family. A lot of cultures are more family-centred.
The stress-coping model of communication
It really about the 'need to know' (cognitive information) and the 'need to feel known' (affective empathy).
Illness attributions: When facing serious illness, patients attribute these illnesses to several causes. Where you attribute the illness to, is dependent of the culture.
Study among White British vs Black Caribbean MS patients in London. Two illness attributes: genetic/medical/environment vs supernatural. How people attribute their illness, could also change the information you have to give.
The role of religion: religion can play a large role in illness perceptions. Islam: disease can be a divine test
.....read more Lecture 6: Cultural Aspects of Clinical NeuropsychologyNeuropsychology: study of the relationship between behaviour, emotion and cognition on one hand, and brain function on the other.
Clinical neuropsychology(NP): assessing and cognitive, emotional and behavioural function after suspecting brain damage for diagnosis and potential treatment.
Brain damage after trauma, vascular accidents, tumours, toxicity, infections, also (neurodegenerative) diseases, or just ageing.
NP assessment: 'imperfect index of brain function'
Physical differences: brain - Brain plasticity can be affected by: specialized skill acquisition, enrichment, deprivation, education, health, stress, correlates of differing cognitive mechanisms, experience more generally.
Cultural neuroscience: field with focus on factors that affect biologicals and psychological processes that reciprocally shape beliefs and norms shared by groups of individuals.
Physical differences: genetics - Core of nature/nurture interactions!
Heredity: passing on characteristics from parents to children based on genetic material. Although about 99% of genes are fixed, 1% differs across individuals. Genes can have effects that depend on external variables.
Epigenetics: environmental factors cause genes to switch on or off without modification of the DNA sequence. Chemical tags can control genes in specific cells. Epigenetic tags can result from lifestyle choices or specific experience. Some epigenetic tags are hereditary! Part of our genetics that only become available in certain circumstances.
Physiological approach is relatively new! Questions:
The relation between biology and behaviours may depend on the cultural meaningsof behaviours, rather than on the actual behaviours.
Measuring brain function: NP assessment: intelligence; memory; verbal abilities; executive functions; visuo-spatial functions; attention; syndrome-related combinations; general batteries. The scores will be compared to normative data, sometimes with correlations for age or education level.
Culture and NP assessment: Normative data based on very limited subsample WEIRD patients: which is partial and biased.
There are
.....read more Lecture 7: Case study: Understanding HIV risk in the aids Pandemic's EpicentreThe epicentre: eastern/southern Afrika. 10% of the world population lives there. 75% of all people infected with HIV and 75% of newly infected people live there.
Anthropology: how individuals’ behaviour is shaped more by group norms and values, but they have been too focused on group norms. They studied only the cultures and took themselves as the norm and the other as needed of explanation. We still see this today. But, our own point of view needs explanation too. The individual perspective of a culture lacked, not everyone in a culture is the same. The lay people still see their own culture as the norm and that everyone within a culture thinks the same.
Cultural relativism: becoming aware that we are also trained to see the world a certain way. The opposite of ethnocentrism. Differences between groups of people are not biological but cultural (‘man-made’/ taught). Franz Boas: "civilization is not something absolute, but is relative, and our ideas and conceptions are true only so far as our civilization goes”. cultural relativism has consequences for data collection.
Data collection: it suggests that the data is out there, has a form/shape, regardless of who finds it. That's not true, data is not easy to find. A lot of the time people just ask what they want to know, but when asked sensitive questions (about HIV for example), people don't always answer honestly. Also, our concepts of things/situations aren't always the same. For example, marriage is very different in the West, then in Afrika.
Ethnographic research: a qualitative research method centred upon direct and sustained, naturalistic interaction with people in the context of their daily lives in an attempt to grasp the world from their perspective.
How to gain the trust of a culture: participate in the daily lives, activities. Trying to bond with the people. Bodily experiencing helps to understand the people.
Differences in world views: Gender
Malawi: you squat down when talking to someone older. Social hierarchy is much more related to age/seniority than gender. Gender not a universal social stratifier in that society. In Malawi, you have words for a younger and older sibling, instead of brother or sister.
Cultural differences in health
Everywhere people try to make sense
.....read more Lecture 8: Problems and treatment of traumatized refugees in Western countries ARQ: organization helping people after traumas.
Who are refugees? Because conflict or persecution they have to flee their country. No longer in their own country, having to cross borders and it is not possible to go back home safely. Countries have a legal obligation to help refugees and are not allowed to send them back if it is not safe. When do you stop being a refugee: when they can go back? When they integrate in their new country?
2017: 14.716 new asylum application. Mostly from Syria (2.202) and Eritrea (1.095). 14.490 people reunited with their families in the Netherlands.
Syrians are the largest group of refugees in the Netherlands. 40% of male and 45% of female recognised refugees have psychological complaints (anxiety, depression, PTSD).
The refugee (mental) burden:
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