Psych

Informed Consent

Informed Consent

Ensure the participants understand the nature of the experiment, including potential risks. Must get written voluntary consent from participant first and then from a legal guardian if required (e.g. underage, mental disability etc)

Justice

The moral obligation to ensure there is a fair consideration of competing claims. There is no unfair burden on a particular group and there is fair access to the benefits of an action.

Systematic errors

Errors that bias a result of an experiment and affect a whole condition within the experiment in the same way. These errors impact on accuracy as it means the results are less close to the true value.

Repeatability

refers to the degree of agreement between results of an experiment reconducted under the same conditions

Reproducibility

Refers to the degree of agreement between the results of an experiment reconducted under changed different conditions

Precision

refers to how closely a set of measurement values agree with one another

Accuracy

Refers to how close a measured value is to its true value

Internal Validity

refers to the extent to which a study investigates what it claims to investigate.

External Validity

refers to the extent to which the results of an experiment can be generalized to the wider public.

Between subjects

the sample is split into two groups and experimental and control, the results are then collated and compared

Neurofibrillary Tangles

tangles within a neuron which inhibit the transmission of neurons and block communication, causing a neuron to die.

Amyloid Plaque

plaque build up around the neuron which blocks communication, leading a neuron to die

Alzhiemers impact on memory

Inability for a person to form long-term explicit memories. This is because the first brain structure impacted is the hippocampus, the hippocampus is responsible for encoding episodic memories.

What does alzhiemer’s lead to

leads to brain atrophy which the neurons dying leading the brain regions to shrink.

Alzheimers Vs Normal Brain

hippocampus and cerebral cortex shrinks and enlarged ventricles. Normal aging also does not cause as extensive death in neurons as Alzheimers does.