investigation. experiments and of an appropriate experimental design and control(s). applying the chosen experimental method to Reasonable application of knowledge and understanding to the investigation, e.g. the environment will be the design of the investigation. controlled by ensuring there are no other distractions apart from the task itself Reasonable justification of design applying the chosen experimental design to the investigation, e.g. half of the participants will be Most if not all of the required features are addressed and the tested without the task first while the other half candidate demonstrates reasonably accurate knowledge of will be tested whilst doing the task first 13 * each. There is some evidence of application in the description identifying an appropriate extraneous variable, e.g. the time given to complete the language of features showing a level of understanding. There is likely to test could affect the results be some appropriate justification of decisions and, at points, this is contextualised with reference to the investigation brief. outlining how a chosen extraneous variable There is a line of reasoning presented with some structure. would be controlled, e.g. all participants will be asked if their first language was English. The information presented is in the most-part relevant and supported by some evidence. The response draws on the candidates own experience and there are some links between AO3 2 Marks – the planned investigation and the practical activity carried out. Broad discussion of design decisions Level 2: 4 - 6 marks Candidates will demonstrate an ability to develop Reasonable knowledge and understanding of field or design and procedures through the justification of laboratory experiments and of an appropriate experimental these decisions this is likely to be one mark for each design and control(s). – decision which is adequately justified but a developed justification may earn all four marks e.g. Limited application of knowledge and understanding to the giving the various advantages of an independent design of the investigation. groups design. Limited justification of design There are no additional marks for contextualising the justification of the chosen experiment and design but a At least some of the required features are addressed and the good answer should include this at points. candidate demonstrates knowledge of these. There is limited evidence of application in the description of techniques Other appropriate responses should be credited. showing basic understanding. There may be an attempt to justify decisions but it is likely to be weak. The information has some relevance and is presented with limited structure. The
13 * investigation. applying the chosen experimental method to the investigation, e.g. the environment will be controlled by ensuring there are no other distractions apart from the task itself applying the chosen experimental design to the investigation, e.g. half of the participants will be tested without the task first while the other half will be tested whilst doing the task first identifying an appropriate extraneous variable, e.g. the time given to complete the language test could affect the results outlining how a chosen extraneous variable would be controlled, e.g. all participants will be asked if their first language was English. AO3 – 2 Marks Broad discussion of design decisions Candidates will demonstrate an ability to develop design and procedures through the justification of these decisions – this is likely to be one mark for each decision which is adequately justified but a justification may earn all four marks e.g. giving the various advantages of an independent groups design. There are no additional marks for contextualising the justification of the chosen experiment and design but a good answer should include this at points. Other appropriate responses should be credited. experiments and of an appropriate experimental design and control(s). Reasonable application of knowledge and understanding to the design of the investigation. Reasonable justification of design Most if not all of the required features are addressed and the candidate demonstrates reasonably accurate knowledge of each. There is some evidence of application in the description of features showing a level of understanding. There is likely to be some appropriate justification of decisions and, at points, this is contextualised with reference to the investigation brief. There is a line of reasoning presented with some structure. The information presented is in the most-part relevant and supported by some evidence. The response draws on the candidates own experience and there are some links between the planned investigation and the practical activity carried out. Level 2: 4 - 6 marks Reasonable knowledge and understanding of field or laboratory experiments and of an appropriate experimental design and control(s). Limited application of knowledge and understanding to the design of the investigation. Limited justification of design At least some of the required features are addressed and the candidate demonstrates knowledge of these. There is limited evidence of application in the description of techniques showing basic understanding. There may be an attempt to justify decisions but it is likely to be weak. The information has some relevance and is presented with limited structure. The developed