respective neurons. Such a differentiation has been entitled a domain-relevant approach to development. This contrasts the previous domain-general and domain-specific approaches. In the domain-general framework, differences in cognitive functioning are attributed to overarching differences in the neurons across the entire brain. The domain-specific approach in contrast argues for inherent, specific differences within the genes which directly control a person's development. While it cannot rule out domain-specificity, neuroconstructivism instead offers a developmental approach that focuses on change and emergent outcomes. Such change leads to domain-specificity in adult brains, but neuroconstructivism argues that the key component of the specificity occurred from the domain-general start state. Every aspect of development is dynamic and interactive. Human intelligence may be more accurately defined by focusing on the plasticity of the brain and its interactions with the environment rather than inherent differences within the DNA structure. Dissociations seen in Williams syndrome or autism provide neuroscientists with a means of exploring different developmental trajectories. Context dependence Neuroconstructivism uses context to demonstrate the possible changes to the brain's neural connections. Starting with genes and incorporating progressively more context indicates some of the constraints involved in development. Instead of viewing the brain as independent of its current or previous environment, neuroconstructivism shows how context interacts with the brain to gradually form the specialized adult brain. In fact, by being built on preexisting representations, representations become increasingly context bound (rather than context free). This leads to "restrictions of fate" in which later learning is more restricted than earlier learning. Neuroconstructivism refers to how we construct our conceptual frameworks throughout our lives. It appeals to early childhood development, culture, and education. Genes Previous theories have supposed that genes are static unchanging code for specific developmental outcomes. However, new research suggests that genes may be triggered by both environmental and behavioral influences. This probabilistic epigenesis view of development suggests that instead of following a predetermined path to expression, genes are modified by the behavior and environment of an organism. Furthermore, these modifications can then act on the environment, creating a causal circle in which genes influencing the environment are re-influenced by these changes in the environment. Encellment Cells do not develop in isolation. Even from a young age, neurons are influenced by the surrounding environment (e.g. other neurons). Over time, neurons interact either spontaneously or in response to some sensory stimulation to form neural networks. Although the exact number of neurons in