Carol Gilligan argued that Kohlberg's theory was based primarily on male participants and emphasized justice-based morality. She proposed that women often prioritize an 'ethic of care' and interpersonal relationships, suggesting that moral development is more nuanced than Kohlberg's original model suggested.

Jean Piaget was a Swiss psychologist who pioneered the study of cognitive development in children. He proposed that children move through four distinct stages of mental development—sensorimotor, preoperational, concrete operational, and formal operational—as they actively construct their understanding of the world through interaction and experience.

Vygotsky argued that inner speech, or private speech that becomes internalized, is a crucial tool for cognitive development. It allows children to guide their own thinking, plan actions, and solve complex problems by talking through the process mentally. Unlike the other options listed, which relate to different developmental theories like attachment or cognitive stages, inner speech is central to Vygotsky's sociocultural theory regarding how language shapes thought and executive function.

Solving for variables like 'X' requires the ability to manipulate symbols and concepts that are not physically present, which is the hallmark of abstract reasoning. According to Piaget's stages of cognitive development, this ability typically emerges during the formal operational stage. Sally's struggle indicates she has not yet fully transitioned into this stage of abstract thought, as she remains reliant on concrete, tangible information.

Jerome Bruner proposed that cognitive development occurs through three modes of representation: enactive, iconic, and symbolic. He emphasized how infants transition from action-based understanding to imagery (iconic) and eventually to language-based (symbolic) systems. His work explored how these systems interact and become interwoven as a child matures and develops more sophisticated cognitive structures.

Successive approximations is a core concept in operant conditioning, specifically within the process of shaping. It involves reinforcing small, incremental steps that move closer to the target behavior. By rewarding these intermediate behaviors, an organism is guided toward performing a complex action that it might not otherwise exhibit spontaneously. This technique is widely used in behavioral psychology to teach new skills to both humans and animals.

The Law of Similarity, often discussed in various scientific and philosophical contexts, posits that entities sharing similar properties or structures are likely to produce similar effects or results. This principle is foundational in fields like psychology, where it helps explain categorization and generalization, and in physical sciences, where it allows for the prediction of outcomes based on the replication of conditions. It serves as a heuristic for understanding patterns in nature.

Habituation is a type of non-associative learning where the response to a stimulus decreases over time due to repeated exposure. This phenomenon is often observed in animals and humans, and is an important mechanism for coping with environmental stimuli.

Stimulus generalization occurs when a conditioned response is elicited by stimuli that resemble the original conditioned stimulus. This process allows organisms to apply learned behaviors to new, but similar, environmental contexts, which is a fundamental concept in classical conditioning theory.

Stimulus generalization occurs when a conditioned response is elicited by stimuli that are similar to the original conditioned stimulus. In this case, the child has generalized the fear from one specific dog to the entire category of dogs. This is a common psychological process where the brain applies learned associations to broader contexts, which can sometimes lead to maladaptive behaviors like phobias if the generalization is too broad.