Exact(5)
A main strength is that we used an experimental design to systematically manipulate factors and observe the effects of this manipulation, something we would not be able to control for in observational studies.
In fact, for field trials, many contextual factors are site-specific and it is difficult to effectively manipulate factors such as soil Cd concentration and soil pH.
Future experiments should manipulate factors such as genetic variation and dispersal to determine their joint effects on responses to climate change.
Unlike work in nonhuman species (13), it is not possible in humans to ethically and independently manipulate factors related to both sex chromosomes and sex hormones within a single study.
In order to assess the applicability of child-based neuropsychological models of ADHD to adult manifestation of the disorder, future studies of cognitive control should employ paradigms which manipulate factors such as event rate or reward.
Similar(55)
The only deliberately manipulated factor, i.e. fertilizer application, modified the transgene effects only in the glasshouse but not in the field.
We review two platforms for designing synthetic transcription factors for manipulating gene expression: Transcription activator-like effectors (TALEs) and the RNA-guided clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 system.
Similarly, the causes of delinquency and crime have been extensively studied, but it is not feasible to manipulate the factors influencing crime, such as genetic factors, methods of upbringing, and inequalities of opportunity.
Further studies are needed which investigate or manipulate these factors and compare difficulty across situations to identify factors that may influence difficulty.
The research community needs to remain alert for potential confounding factors that may influence behavioural outcomes in experiments that manipulate paternal factors.
In particular, researchers are searching for the factors that determine an UML model's understandability and are looking for ways to manipulate these factors.
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