A financial advisor claims their stock-picking method works because their last five predictions were correct. However, over the past year they made 47 total predictions, with 23 correct and 24 incorrect. When confronted with this information, they respond: “I’ve really improved lately—just look at my recent track record.” What cognitive error makes their recent success seem more impressive than it actually is?

A police officer stops a car driven by someone matching a suspect description: tall, dark hair, wearing glasses. Under stress during the stop, the officer later reports the driver was wearing a red jacket, had a beard, and spoke with an accent—details that security footage shows are completely inaccurate. The officer genuinely believes these false details. What best explains these confidently held but false memories?

A homeowner notices their electricity bill decreases in the month after installing “energy-saving” magnets on their power lines. They promote the magnets to neighbors as proven cost-savers. What alternative explanations should be considered before concluding the magnets worked?

A therapist treats anxiety using weekly sessions involving meditation instruction, breathing exercises, cognitive restructuring, and lifestyle counseling. After eight sessions, 15 of 20 clients report reduced anxiety. The therapist publishes these results as evidence that their unique combination approach is effective. What is the most fundamental limitation of this evidence?

Which statement best distinguishes between a valid argument and a strong argument?

A detective examines a crime scene and notes: the window is broken from the outside, valuables are missing, and there are muddy footprints leading to the safe. She concludes that a burglar broke in through the window. What type of reasoning is the detective using?

Examine this argument: “A civilization as advanced as the ancient Egyptians couldn’t possibly have built the pyramids with just primitive tools. Since they lacked modern technology, they must have had help from an advanced civilization—either Atlanteans or extraterrestrials. This is the only explanation that makes sense.” Which combination of fallacies is present?

Consider this argument: “The human mind is composed of individual neurons, and individual neurons follow deterministic physical laws. Therefore, human consciousness must be entirely deterministic with no free will.” Which fallacy does this most clearly commit?

Consider this argument: “If paranormal investigators find electromagnetic anomalies, then ghosts are present. If ghosts are present, then the house is haunted. Therefore, if paranormal investigators find electromagnetic anomalies, then the house is haunted.” What is this argument’s form and status?

A solution that resists changes in pH when acid or alkali is added to it is the definition of what word?