Perceptual maps illustrate how customers view brands along two dimensions important to them, placing each brand in a two-dimensional space. This visual layout lets you see where brands cluster and, crucially, where there are empty gaps in the market. Those gaps signal opportunities to reposition your brand or adjust your portfolio to better match customer perceptions. Because this tool focuses on external perceptions and competitive positioning, it isn’t about forecasting demand, mapping the distribution channel, or analyzing internal capabilities.

Skimming pricing centers on capturing the most value from early buyers by setting a high initial price. This lets the company quickly recover R&D and marketing costs while signaling premium quality, especially when the product is innovative and faces limited early competition. It works best when the offering is highly differentiated, has clear advantages, and there’s a segment of customers willing to pay more at launch, with the plan to lower prices later as competition increases or the market broadens. If demand is highly price elastic, or competitors can enter quickly, or the market is very price-sensitive from the start, charging a high initial price can slow adoption and reduce total profits.

The main idea being tested is how a price promotion affects demand for other products in the portfolio, which is captured by cross-elasticities with substitutes and complements. When you change the price of one product, you must anticipate how that shift will influence the sales of related items: substitutes may gain or lose demand as consumers switch, while complements may see increased or decreased demand due to the sale. Analyzing cross-elasticities provides a quantitative way to forecast cannibalization or bundling effects, helping you plan promotions, pricing, and assortment so you optimize overall profitability rather than just boosting a single item. Other policies focus on internal controls, messaging, or channel economics, not on the interdependencies between products, so they don’t target the real impact of promotions across substitutes and complements.

The idea being tested is how a company expands its offerings while using its existing brand. A line extension adds new items within the same product category under the same brand name—think adding a new flavor or variant of the same product. A brand extension uses the same brand name to enter an entirely different product category, leveraging the brand’s reputation to attract consumers to a new type of product. So the best choice says that line extension adds new items within the same product category, while brand extension uses the brand to enter a different product category. For example, a toothpaste brand launching a new toothpaste variant is a line extension, whereas using the toothpaste brand to introduce a toothbrush under the same brand is a brand extension. The other ideas don’t fit because using a different brand name would be starting a new brand rather than extending the existing one, and adding flavors to the same product line is a line extension, not a brand extension.